Error 500 on panel

Hi All,
did not check my site for months. Went to panel for some site edit and found that panel shows error 500 costantly. Site subpages work

The site is running on AWS EC2

I have read the other posts in this forum regarding error 500.
Tried to enable Rewritebase /
Also tried Options -Multiviews at the beginning
no success
This is my phpinfo.php

System	Linux ip-172-31-27-35 4.4.23-31.54.amzn1.x86_64 #1 SMP Tue Oct 18 22:02:09 UTC 2016 x86_64
Build Date	Aug 14 2017 17:38:10
Server API	Apache 2.0 Handler
Virtual Directory Support	disabled
Configuration File (php.ini) Path	/etc/php-5.6.conf:/etc
Loaded Configuration File	/etc/php.ini
Scan this dir for additional .ini files	/etc/php-5.6.d
Additional .ini files parsed	/etc/php-5.6.d/20-bz2.ini, /etc/php-5.6.d/20-calendar.ini, /etc/php-5.6.d/20-ctype.ini, /etc/php-5.6.d/20-curl.ini, /etc/php-5.6.d/20-dom.ini, /etc/php-5.6.d/20-exif.ini, /etc/php-5.6.d/20-fileinfo.ini, /etc/php-5.6.d/20-ftp.ini, /etc/php-5.6.d/20-gettext.ini, /etc/php-5.6.d/20-iconv.ini, /etc/php-5.6.d/20-mbstring.ini, /etc/php-5.6.d/20-mysqlnd.ini, /etc/php-5.6.d/20-pdo.ini, /etc/php-5.6.d/20-phar.ini, /etc/php-5.6.d/20-posix.ini, /etc/php-5.6.d/20-shmop.ini, /etc/php-5.6.d/20-simplexml.ini, /etc/php-5.6.d/20-sockets.ini, /etc/php-5.6.d/20-sqlite3.ini, /etc/php-5.6.d/20-sysvmsg.ini, /etc/php-5.6.d/20-sysvsem.ini, /etc/php-5.6.d/20-sysvshm.ini, /etc/php-5.6.d/20-tokenizer.ini, /etc/php-5.6.d/20-xml.ini, /etc/php-5.6.d/20-xmlwriter.ini, /etc/php-5.6.d/20-xsl.ini, /etc/php-5.6.d/20-zip.ini, /etc/php-5.6.d/30-mysql.ini, /etc/php-5.6.d/30-mysqli.ini, /etc/php-5.6.d/30-pdo_mysql.ini, /etc/php-5.6.d/30-pdo_sqlite.ini, /etc/php-5.6.d/30-wddx.ini, /etc/php-5.6.d/30-xmlreader.ini, /etc/php-5.6.d/40-json.ini, /etc/php-5.6.d/php.ini
PHP API	20131106
PHP Extension	20131226
Zend Extension	220131226
Zend Extension Build	API220131226,NTS
PHP Extension Build	API20131226,NTS
Debug Build	no
Thread Safety	disabled
Zend Signal Handling	disabled
Zend Memory Manager	enabled
Zend Multibyte Support	provided by mbstring
IPv6 Support	enabled
DTrace Support	enabled
Registered PHP Streams	https, ftps, compress.zlib, php, file, glob, data, http, ftp, compress.bzip2, phar, zip
Registered Stream Socket Transports	tcp, udp, unix, udg, ssl, sslv3, sslv2, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters	zlib.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, bzip2.*, convert.iconv.*
Zend logo This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
Configuration

apache2handler

Apache Version	Apache/2.4.23 (Amazon) PHP/5.6.31
Apache API Version	20120211
Server Administrator	root@localhost
Hostname:Port	ip-172-31-27-35.eu-west-1.compute.internal:0
User/Group	apache(48)/48
Max Requests	Per Child: 0 - Keep Alive: on - Max Per Connection: 100
Timeouts	Connection: 60 - Keep-Alive: 5
Virtual Server	No
Server Root	/etc/httpd
Loaded Modules	core mod_so http_core mod_speling mod_access_compat mod_actions mod_alias mod_allowmethods mod_auth_basic mod_auth_digest mod_authn_anon mod_authn_core mod_authn_dbd mod_authn_dbm mod_authn_file mod_authn_socache mod_authz_core mod_authz_dbd mod_authz_dbm mod_authz_groupfile mod_authz_host mod_authz_owner mod_authz_user mod_autoindex mod_cache mod_cache_disk mod_cache_socache mod_data mod_dbd mod_deflate mod_dir mod_dumpio mod_echo mod_env mod_expires mod_ext_filter mod_filter mod_headers mod_include mod_info mod_log_config mod_logio mod_macro mod_mime_magic mod_mime mod_negotiation mod_remoteip mod_reqtimeout mod_request mod_rewrite mod_setenvif mod_slotmem_plain mod_slotmem_shm mod_socache_dbm mod_socache_memcache mod_socache_shmcb mod_status mod_substitute mod_suexec mod_unixd mod_userdir mod_version mod_vhost_alias mod_watchdog mod_dav mod_dav_fs mod_dav_lock mod_lua prefork mod_proxy mod_lbmethod_bybusyness mod_lbmethod_byrequests mod_lbmethod_bytraffic mod_lbmethod_heartbeat mod_proxy_ajp mod_proxy_balancer mod_proxy_connect mod_proxy_express mod_proxy_fcgi mod_proxy_fdpass mod_proxy_ftp mod_proxy_http mod_proxy_hcheck mod_proxy_scgi mod_proxy_wstunnel mod_cgi mod_php5
Directive	Local Value	Master Value
engine	1	1
last_modified	0	0
xbithack	0	0
Apache Environment

Variable	Value
HTTP_HOST	www.---.it
HTTP_CONNECTION	keep-alive
HTTP_USER_AGENT	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36
HTTP_UPGRADE_INSECURE_REQUESTS	1
HTTP_ACCEPT	text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
HTTP_ACCEPT_ENCODING	gzip, deflate
HTTP_ACCEPT_LANGUAGE	it-IT,en-US;q=0.8,it;q=0.6,en;q=0.4
HTTP_COOKIE	_ga=GA1.2.162688502.1498814856; _gid=GA1.2.1113569246.1508233469; PHPSESSID=ia4uchl02o3grqvo5tv22dbm84
PATH	/sbin:/usr/sbin:/bin:/usr/bin
SERVER_SIGNATURE	no value
SERVER_SOFTWARE	Apache/2.4.23 (Amazon) PHP/5.6.31
SERVER_NAME	www.---.it
SERVER_ADDR	172.31.27.35
SERVER_PORT	80
REMOTE_ADDR	95.242.196.152
DOCUMENT_ROOT	/var/www/html
REQUEST_SCHEME	http
CONTEXT_PREFIX	no value
CONTEXT_DOCUMENT_ROOT	/var/www/html
SERVER_ADMIN	root@localhost
SCRIPT_FILENAME	/var/www/html/phpinfo.php
REMOTE_PORT	63232
GATEWAY_INTERFACE	CGI/1.1
SERVER_PROTOCOL	HTTP/1.1
REQUEST_METHOD	GET
QUERY_STRING	no value
REQUEST_URI	/phpinfo.php
SCRIPT_NAME	/phpinfo.php
HTTP Headers Information

HTTP Request Headers
HTTP Request	GET /phpinfo.php HTTP/1.1
Host	www.---.it
Connection	keep-alive
User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36
Upgrade-Insecure-Requests	1
Accept	text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding	gzip, deflate
Accept-Language	it-IT,en-US;q=0.8,it;q=0.6,en;q=0.4
Cookie	_ga=GA1.2.162688502.1498814856; _gid=GA1.2.1113569246.1508233469; PHPSESSID=ia4uchl02o3grqvo5tv22dbm84
HTTP Response Headers
X-Powered-By	PHP/5.6.31
bz2

BZip2 Support	Enabled
Stream Wrapper support	compress.bzip2://
Stream Filter support	bzip2.decompress, bzip2.compress
BZip2 Version	1.0.6, 6-Sept-2010
calendar

Calendar support	enabled
Core

PHP Version	5.6.31
Directive	Local Value	Master Value
allow_url_fopen	On	On
allow_url_include	Off	Off
always_populate_raw_post_data	0	0
arg_separator.input	&	&
arg_separator.output	&	&
asp_tags	Off	Off
auto_append_file	no value	no value
auto_globals_jit	On	On
auto_prepend_file	no value	no value
browscap	no value	no value
default_charset	UTF-8	UTF-8
default_mimetype	text/html	text/html
disable_classes	no value	no value
disable_functions	no value	no value
display_errors	Off	Off
display_startup_errors	Off	Off
doc_root	no value	no value
docref_ext	no value	no value
docref_root	no value	no value
enable_dl	Off	Off
enable_post_data_reading	On	On
error_append_string	no value	no value
error_log	no value	no value
error_prepend_string	no value	no value
error_reporting	22527	22527
exit_on_timeout	Off	Off
expose_php	On	On
extension_dir	/usr/lib64/php/5.6/modules	/usr/lib64/php/5.6/modules
file_uploads	On	On
highlight.comment	#FF8000	#FF8000
highlight.default	#0000BB	#0000BB
highlight.html	#000000	#000000
highlight.keyword	#007700	#007700
highlight.string	#DD0000	#DD0000
html_errors	On	On
ignore_repeated_errors	Off	Off
ignore_repeated_source	Off	Off
ignore_user_abort	Off	Off
implicit_flush	Off	Off
include_path	.:/usr/share/pear:/usr/share/php	.:/usr/share/pear:/usr/share/php
input_encoding	no value	no value
internal_encoding	no value	no value
log_errors	On	On
log_errors_max_len	1024	1024
mail.add_x_header	On	On
mail.force_extra_parameters	no value	no value
mail.log	no value	no value
max_execution_time	30	30
max_file_uploads	20	20
max_input_nesting_level	64	64
max_input_time	60	60
max_input_vars	1000	1000
memory_limit	128M	128M
open_basedir	no value	no value
output_buffering	4096	4096
output_encoding	no value	no value
output_handler	no value	no value
post_max_size	8M	8M
precision	14	14
realpath_cache_size	16K	16K
realpath_cache_ttl	120	120
register_argc_argv	Off	Off
report_memleaks	On	On
report_zend_debug	On	On
request_order	GP	GP
sendmail_from	no value	no value
sendmail_path	/usr/sbin/sendmail -t -i	/usr/sbin/sendmail -t -i
serialize_precision	17	17
short_open_tag	Off	Off
SMTP	localhost	localhost
smtp_port	25	25
sql.safe_mode	Off	Off
sys_temp_dir	no value	no value
track_errors	Off	Off
unserialize_callback_func	no value	no value
upload_max_filesize	2M	2M
upload_tmp_dir	no value	no value
user_dir	no value	no value
user_ini.cache_ttl	300	300
user_ini.filename	.user.ini	.user.ini
variables_order	GPCS	GPCS
xmlrpc_error_number	0	0
xmlrpc_errors	Off	Off
zend.detect_unicode	On	On
zend.enable_gc	On	On
zend.multibyte	Off	Off
zend.script_encoding	no value	no value
ctype

ctype functions	enabled
curl

cURL support	enabled
cURL Information	7.47.1
Age	3
Features
AsynchDNS	Yes
CharConv	No
Debug	No
GSS-Negotiate	No
IDN	Yes
IPv6	Yes
krb4	No
Largefile	Yes
libz	Yes
NTLM	Yes
NTLMWB	Yes
SPNEGO	Yes
SSL	Yes
SSPI	No
TLS-SRP	No
Protocols	dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps, pop3, pop3s, rtsp, scp, sftp, smb, smbs, smtp, smtps, telnet, tftp
Host	x86_64-redhat-linux-gnu
SSL Version	NSS/3.21 Basic ECC
ZLib Version	1.2.8
libSSH Version	libssh2/1.4.2
date

date/time support	enabled
"Olson" Timezone Database Version	0.system
Timezone Database	internal
Default timezone	UTC
Directive	Local Value	Master Value
date.default_latitude	31.7667	31.7667
date.default_longitude	35.2333	35.2333
date.sunrise_zenith	90.583333	90.583333
date.sunset_zenith	90.583333	90.583333
date.timezone	no value	no value
dom

DOM/XML	enabled
DOM/XML API Version	20031129
libxml Version	2.9.1
HTML Support	enabled
XPath Support	enabled
XPointer Support	enabled
Schema Support	enabled
RelaxNG Support	enabled
ereg

Regex Library	Bundled library enabled
exif

EXIF Support	enabled
EXIF Version	1.4 $Id: 1c8772f76be691b7b3f77ca31eb788a2abbcefe5 $
Supported EXIF Version	0220
Supported filetypes	JPEG,TIFF
Directive	Local Value	Master Value
exif.decode_jis_intel	JIS	JIS
exif.decode_jis_motorola	JIS	JIS
exif.decode_unicode_intel	UCS-2LE	UCS-2LE
exif.decode_unicode_motorola	UCS-2BE	UCS-2BE
exif.encode_jis	no value	no value
exif.encode_unicode	ISO-8859-15	ISO-8859-15
fileinfo

fileinfo support	enabled
version	1.0.5
libmagic	517
filter

Input Validation and Filtering	enabled
Revision	$Id: 5b79667bd9a68977a9b4f7505223a8e216e04908 $
Directive	Local Value	Master Value
filter.default	unsafe_raw	unsafe_raw
filter.default_flags	no value	no value
ftp

FTP support	enabled
gettext

GetText Support	enabled
hash

hash support	enabled
Hashing Engines	md2 md4 md5 sha1 sha224 sha256 sha384 sha512 ripemd128 ripemd160 ripemd256 ripemd320 whirlpool tiger128,3 tiger160,3 tiger192,3 tiger128,4 tiger160,4 tiger192,4 snefru snefru256 gost gost-crypto adler32 crc32 crc32b fnv132 fnv1a32 fnv164 fnv1a64 joaat haval128,3 haval160,3 haval192,3 haval224,3 haval256,3 haval128,4 haval160,4 haval192,4 haval224,4 haval256,4 haval128,5 haval160,5 haval192,5 haval224,5 haval256,5
iconv

iconv support	enabled
iconv implementation	glibc
iconv library version	2.17
Directive	Local Value	Master Value
iconv.input_encoding	no value	no value
iconv.internal_encoding	no value	no value
iconv.output_encoding	no value	no value
json

json support	enabled
json version	1.3.6
JSON-C headers version	0.11
JSON-C library version	0.11
libxml

libXML support	active
libXML Compiled Version	2.9.1
libXML Loaded Version	20901
libXML streams	enabled
mbstring

Multibyte Support	enabled
Multibyte string engine	libmbfl
HTTP input encoding translation	disabled
libmbfl version	1.3.2
mbstring extension makes use of "streamable kanji code filter and converter", which is distributed under the GNU Lesser General Public License version 2.1.
Multibyte (japanese) regex support	enabled
Multibyte regex (oniguruma) backtrack check	On
Multibyte regex (oniguruma) version	5.9.5
Directive	Local Value	Master Value
mbstring.detect_order	no value	no value
mbstring.encoding_translation	Off	Off
mbstring.func_overload	0	0
mbstring.http_input	no value	no value
mbstring.http_output	no value	no value
mbstring.http_output_conv_mimetypes	^(text/|application/xhtml\+xml)	^(text/|application/xhtml\+xml)
mbstring.internal_encoding	no value	no value
mbstring.language	neutral	neutral
mbstring.strict_detection	Off	Off
mbstring.substitute_character	no value	no value
mhash

MHASH support	Enabled
MHASH API Version	Emulated Support
mysql

MySQL Support	enabled
Active Persistent Links	0
Active Links	0
Client API version	mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
Directive	Local Value	Master Value
mysql.allow_local_infile	On	On
mysql.allow_persistent	On	On
mysql.connect_timeout	60	60
mysql.default_host	no value	no value
mysql.default_password	no value	no value
mysql.default_port	no value	no value
mysql.default_socket	/var/lib/mysql/mysql.sock	/var/lib/mysql/mysql.sock
mysql.default_user	no value	no value
mysql.max_links	Unlimited	Unlimited
mysql.max_persistent	Unlimited	Unlimited
mysql.trace_mode	Off	Off
mysqli

MysqlI Support	enabled
Client API library version	mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
Active Persistent Links	0
Inactive Persistent Links	0
Active Links	0
Directive	Local Value	Master Value
mysqli.allow_local_infile	On	On
mysqli.allow_persistent	On	On
mysqli.default_host	no value	no value
mysqli.default_port	3306	3306
mysqli.default_pw	no value	no value
mysqli.default_socket	/var/lib/mysql/mysql.sock	/var/lib/mysql/mysql.sock
mysqli.default_user	no value	no value
mysqli.max_links	Unlimited	Unlimited
mysqli.max_persistent	Unlimited	Unlimited
mysqli.reconnect	Off	Off
mysqli.rollback_on_cached_plink	Off	Off
mysqlnd

mysqlnd	enabled
Version	mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
Compression	supported
core SSL	supported
extended SSL	supported
Command buffer size	4096
Read buffer size	32768
Read timeout	31536000
Collecting statistics	Yes
Collecting memory statistics	No
Tracing	n/a
Loaded plugins	mysqlnd,debug_trace,auth_plugin_mysql_native_password,auth_plugin_mysql_clear_password,auth_plugin_sha256_password
API Extensions	mysql,mysqli,pdo_mysql
mysqlnd statistics	
bytes_sent	0
bytes_received	0
packets_sent	0
packets_received	0
protocol_overhead_in	0
protocol_overhead_out	0
bytes_received_ok_packet	0
bytes_received_eof_packet	0
bytes_received_rset_header_packet	0
bytes_received_rset_field_meta_packet	0
bytes_received_rset_row_packet	0
bytes_received_prepare_response_packet	0
bytes_received_change_user_packet	0
packets_sent_command	0
packets_received_ok	0
packets_received_eof	0
packets_received_rset_header	0
packets_received_rset_field_meta	0
packets_received_rset_row	0
packets_received_prepare_response	0
packets_received_change_user	0
result_set_queries	0
non_result_set_queries	0
no_index_used	0
bad_index_used	0
slow_queries	0
buffered_sets	0
unbuffered_sets	0
ps_buffered_sets	0
ps_unbuffered_sets	0
flushed_normal_sets	0
flushed_ps_sets	0
ps_prepared_never_executed	0
ps_prepared_once_executed	0
rows_fetched_from_server_normal	0
rows_fetched_from_server_ps	0
rows_buffered_from_client_normal	0
rows_buffered_from_client_ps	0
rows_fetched_from_client_normal_buffered	0
rows_fetched_from_client_normal_unbuffered	0
rows_fetched_from_client_ps_buffered	0
rows_fetched_from_client_ps_unbuffered	0
rows_fetched_from_client_ps_cursor	0
rows_affected_normal	0
rows_affected_ps	0
rows_skipped_normal	0
rows_skipped_ps	0
copy_on_write_saved	0
copy_on_write_performed	0
command_buffer_too_small	0
connect_success	0
connect_failure	0
connection_reused	0
reconnect	0
pconnect_success	0
active_connections	0
active_persistent_connections	0
explicit_close	0
implicit_close	0
disconnect_close	0
in_middle_of_command_close	0
explicit_free_result	0
implicit_free_result	0
explicit_stmt_close	0
implicit_stmt_close	0
mem_emalloc_count	0
mem_emalloc_amount	0
mem_ecalloc_count	0
mem_ecalloc_amount	0
mem_erealloc_count	0
mem_erealloc_amount	0
mem_efree_count	0
mem_efree_amount	0
mem_malloc_count	0
mem_malloc_amount	0
mem_calloc_count	0
mem_calloc_amount	0
mem_realloc_count	0
mem_realloc_amount	0
mem_free_count	0
mem_free_amount	0
mem_estrndup_count	0
mem_strndup_count	0
mem_estndup_count	0
mem_strdup_count	0
proto_text_fetched_null	0
proto_text_fetched_bit	0
proto_text_fetched_tinyint	0
proto_text_fetched_short	0
proto_text_fetched_int24	0
proto_text_fetched_int	0
proto_text_fetched_bigint	0
proto_text_fetched_decimal	0
proto_text_fetched_float	0
proto_text_fetched_double	0
proto_text_fetched_date	0
proto_text_fetched_year	0
proto_text_fetched_time	0
proto_text_fetched_datetime	0
proto_text_fetched_timestamp	0
proto_text_fetched_string	0
proto_text_fetched_blob	0
proto_text_fetched_enum	0
proto_text_fetched_set	0
proto_text_fetched_geometry	0
proto_text_fetched_other	0
proto_binary_fetched_null	0
proto_binary_fetched_bit	0
proto_binary_fetched_tinyint	0
proto_binary_fetched_short	0
proto_binary_fetched_int24	0
proto_binary_fetched_int	0
proto_binary_fetched_bigint	0
proto_binary_fetched_decimal	0
proto_binary_fetched_float	0
proto_binary_fetched_double	0
proto_binary_fetched_date	0
proto_binary_fetched_year	0
proto_binary_fetched_time	0
proto_binary_fetched_datetime	0
proto_binary_fetched_timestamp	0
proto_binary_fetched_string	0
proto_binary_fetched_json	0
proto_binary_fetched_blob	0
proto_binary_fetched_enum	0
proto_binary_fetched_set	0
proto_binary_fetched_geometry	0
proto_binary_fetched_other	0
init_command_executed_count	0
init_command_failed_count	0
com_quit	0
com_init_db	0
com_query	0
com_field_list	0
com_create_db	0
com_drop_db	0
com_refresh	0
com_shutdown	0
com_statistics	0
com_process_info	0
com_connect	0
com_process_kill	0
com_debug	0
com_ping	0
com_time	0
com_delayed_insert	0
com_change_user	0
com_binlog_dump	0
com_table_dump	0
com_connect_out	0
com_register_slave	0
com_stmt_prepare	0
com_stmt_execute	0
com_stmt_send_long_data	0
com_stmt_close	0
com_stmt_reset	0
com_stmt_set_option	0
com_stmt_fetch	0
com_deamon	0
bytes_received_real_data_normal	0
bytes_received_real_data_ps	0
openssl

OpenSSL support	enabled
OpenSSL Library Version	OpenSSL 1.0.1k-fips 8 Jan 2015
OpenSSL Header Version	OpenSSL 1.0.1k-fips 8 Jan 2015
Openssl default config	/etc/pki/tls/openssl.cnf
Directive	Local Value	Master Value
openssl.cafile	no value	no value
openssl.capath	no value	no value
pcre

PCRE (Perl Compatible Regular Expressions) Support	enabled
PCRE Library Version	8.21 2011-12-12
Directive	Local Value	Master Value
pcre.backtrack_limit	1000000	1000000
pcre.recursion_limit	100000	100000
PDO

PDO support	enabled
PDO drivers	mysql, sqlite
pdo_mysql

PDO Driver for MySQL	enabled
Client API version	mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
Directive	Local Value	Master Value
pdo_mysql.default_socket	/var/lib/mysql/mysql.sock	/var/lib/mysql/mysql.sock
pdo_sqlite

PDO Driver for SQLite 3.x	enabled
SQLite Library	3.7.17
Phar

Phar: PHP Archive support	enabled
Phar EXT version	2.0.2
Phar API version	1.1.1
SVN revision	$Id: 780be432570e80dd34c1a9c217ef87ade22bf136 $
Phar-based phar archives	enabled
Tar-based phar archives	enabled
ZIP-based phar archives	enabled
gzip compression	enabled
bzip2 compression	enabled
Native OpenSSL support	enabled
Phar based on pear/PHP_Archive, original concept by Davey Shafik.
Phar fully realized by Gregory Beaver and Marcus Boerger.
Portions of tar implementation Copyright (c) 2003-2009 Tim Kientzle.
Directive	Local Value	Master Value
phar.cache_list	no value	no value
phar.readonly	On	On
phar.require_hash	On	On
posix

Revision	$Id: 5f4acc20904b1406142f2a0ede068db048c77e77 $
Reflection

Reflection	enabled
Version	$Id: 5f15287237d5f78d75b19c26915aa7bd83dee8b8 $
session

Session Support	enabled
Registered save handlers	files user
Registered serializer handlers	php_serialize php php_binary wddx
Directive	Local Value	Master Value
session.auto_start	Off	Off
session.cache_expire	180	180
session.cache_limiter	nocache	nocache
session.cookie_domain	no value	no value
session.cookie_httponly	Off	Off
session.cookie_lifetime	0	0
session.cookie_path	/	/
session.cookie_secure	Off	Off
session.entropy_file	/dev/urandom	/dev/urandom
session.entropy_length	32	32
session.gc_divisor	1000	1000
session.gc_maxlifetime	1440	1440
session.gc_probability	1	1
session.hash_bits_per_character	5	5
session.hash_function	0	0
session.name	PHPSESSID	PHPSESSID
session.referer_check	no value	no value
session.save_handler	files	files
session.save_path	/var/lib/php/5.6/session	no value
session.serialize_handler	php	php
session.upload_progress.cleanup	On	On
session.upload_progress.enabled	On	On
session.upload_progress.freq	1%	1%
session.upload_progress.min_freq	1	1
session.upload_progress.name	PHP_SESSION_UPLOAD_PROGRESS	PHP_SESSION_UPLOAD_PROGRESS
session.upload_progress.prefix	upload_progress_	upload_progress_
session.use_cookies	On	On
session.use_only_cookies	On	On
session.use_strict_mode	Off	Off
session.use_trans_sid	0	0
shmop

shmop support	enabled
SimpleXML

Simplexml support	enabled
Revision	$Id: d7077fc935154236afb4fe70814ba358efdbdca4 $
Schema support	enabled
sockets

Sockets Support	enabled
SPL

SPL support	enabled
Interfaces	Countable, OuterIterator, RecursiveIterator, SeekableIterator, SplObserver, SplSubject
Classes	AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, CallbackFilterIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveCallbackFilterIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException
sqlite3

SQLite3 support	enabled
SQLite3 module version	0.7-dev
SQLite Library	3.7.17
Directive	Local Value	Master Value
sqlite3.extension_dir	no value	no value
standard

Dynamic Library Support	enabled
Path to sendmail	/usr/sbin/sendmail -t -i
Directive	Local Value	Master Value
assert.active	1	1
assert.bail	0	0
assert.callback	no value	no value
assert.quiet_eval	0	0
assert.warning	1	1
auto_detect_line_endings	0	0
default_socket_timeout	60	60
from	no value	no value
url_rewriter.tags	a=href,area=href,frame=src,input=src,form=fakeentry	a=href,area=href,frame=src,input=src,form=fakeentry
user_agent	no value	no value
sysvmsg

sysvmsg support	enabled
Revision	$Id: 58590192720bc56939152fde3645d808b348bb9b $
tokenizer

Tokenizer Support	enabled
wddx

WDDX Support	enabled
WDDX Session Serializer	enabled
xml

XML Support	active
XML Namespace Support	active
libxml2 Version	2.9.1
xmlreader

XMLReader	enabled
xmlwriter

XMLWriter	enabled
xsl

XSL	enabled
libxslt Version	1.1.28
libxslt compiled against libxml Version	2.9.1
EXSLT	enabled
libexslt Version	1.1.28
zip

Zip	enabled
Zip version	1.12.5
Libzip version	0.11.2
zlib

ZLib Support	enabled
Stream Wrapper	compress.zlib://
Stream Filter	zlib.inflate, zlib.deflate
Compiled Version	1.2.8
Linked Version	1.2.8
Directive	Local Value	Master Value
zlib.output_compression	Off	Off
zlib.output_compression_level	-1	-1
zlib.output_handler	no value	no value
Additional Modules

Module Name
sysvsem
sysvshm
Environment

Variable	Value
TERM	xterm-256color
PATH	/sbin:/usr/sbin:/bin:/usr/bin
PWD	/
LANG	C
SHLVL	2
_	/usr/sbin/httpd
PHP Variables

Variable	Value
_COOKIE["_ga"]	GA1.2.162688502.1498814856
_COOKIE["_gid"]	GA1.2.1113569246.1508233469
_COOKIE["PHPSESSID"]	ia4uchl02o3grqvo5tv22dbm84
_SERVER["HTTP_HOST"]	www.---.it
_SERVER["HTTP_CONNECTION"]	keep-alive
_SERVER["HTTP_USER_AGENT"]	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36
_SERVER["HTTP_UPGRADE_INSECURE_REQUESTS"]	1
_SERVER["HTTP_ACCEPT"]	text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
_SERVER["HTTP_ACCEPT_ENCODING"]	gzip, deflate
_SERVER["HTTP_ACCEPT_LANGUAGE"]	it-IT,en-US;q=0.8,it;q=0.6,en;q=0.4
_SERVER["HTTP_COOKIE"]	_ga=GA1.2.162688502.1498814856; _gid=GA1.2.1113569246.1508233469; PHPSESSID=ia4uchl02o3grqvo5tv22dbm84
_SERVER["PATH"]	/sbin:/usr/sbin:/bin:/usr/bin
_SERVER["SERVER_SIGNATURE"]	no value
_SERVER["SERVER_SOFTWARE"]	Apache/2.4.23 (Amazon) PHP/5.6.31
_SERVER["SERVER_NAME"]	www.----.it
_SERVER["SERVER_ADDR"]	172.31.27.35
_SERVER["SERVER_PORT"]	80
_SERVER["REMOTE_ADDR"]	95.242.196.152
_SERVER["DOCUMENT_ROOT"]	/var/www/html
_SERVER["REQUEST_SCHEME"]	http
_SERVER["CONTEXT_PREFIX"]	no value
_SERVER["CONTEXT_DOCUMENT_ROOT"]	/var/www/html
_SERVER["SERVER_ADMIN"]	root@localhost
_SERVER["SCRIPT_FILENAME"]	/var/www/html/phpinfo.php
_SERVER["REMOTE_PORT"]	63232
_SERVER["GATEWAY_INTERFACE"]	CGI/1.1
_SERVER["SERVER_PROTOCOL"]	HTTP/1.1
_SERVER["REQUEST_METHOD"]	GET
_SERVER["QUERY_STRING"]	no value
_SERVER["REQUEST_URI"]	/phpinfo.php
_SERVER["SCRIPT_NAME"]	/phpinfo.php
_SERVER["PHP_SELF"]	/phpinfo.php
_SERVER["REQUEST_TIME_FLOAT"]	1508233893.356
_SERVER["REQUEST_TIME"]	1508233893

php56-mbstring is already installed

this is my .htaccess
# Kirby .htaccess

# rewrite rules
<IfModule mod_rewrite.c>

# enable awesome urls. i.e.:
# http://yourdomain.com/about-us/team
RewriteEngine on

# make sure to set the RewriteBase correctly
# if you are running the site in a subfolder.
# Otherwise links or the entire site will break.
#
# If your homepage is http://yourdomain.com/mysite
# Set the RewriteBase to:
#
# RewriteBase /mysite
# block text files in the content folder from being accessed directly
RewriteRule ^content/(.*)\.(txt|md|mdown)$ index.php [L]

# block all files in the site folder from being accessed directly
# except for requests to plugin assets files
#RewriteRule ^assets/plugins/([a-zA-Z0-9\.\-_%=]+)/(.*)$ site/plugins/$1/assets/$2 [L,N]
#RewriteCond $1 !^plugins/[a-zA-Z0-9\.\-_%=]+/assets/.*
RewriteRule ^site/(.*) index.php [L]

# block all files in the kirby folder from being accessed directly
RewriteRule ^kirby/(.*) index.php [L]

# make panel links work
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^panel/(.*) panel/index.php [L]

# make site links work
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*) index.php [L]

</IfModule>

# Additional recommended values
# Remove comments for those you want to use.
#
# AddDefaultCharset UTF-8
#
# php_flag short_open_tag on

Has it ever worked? Have you ever created a first user?

Have you checked if there is anything more enlightening in the server/PHP error logs?

yes, it used to work, and now it’s working again.
We guess that the problem was related to a copy of the user file named username (1),
I have no ideo how that copy has been created.
Thanks for your help