Panel error - The JSON response from the API could not be parsed. Please check your API connection

[Adrieng]

Hi everyone,

I just set up Kirby on a new web hosting and I can’t publish anything via the panel, only create draft. When I try to publish, it throws an error : “The JSON response from the API could not be parsed. Please check your API connection.”

In the network tab, I see a PATCH request that get a code 403 :

The site is hosted on OVH.
PHP 7.1 (freshly updated)

Here 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

# In some environments it's necessary to
# set the RewriteBase to:
#
# RewriteBase /

# block files and folders beginning with a dot, such as .git
# except for the .well-known folder, which is used for Let's Encrypt and security.txt
RewriteRule (^|/)\.(?!well-known\/) index.php [L]

# 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 ^site/(.*) index.php [L]

# Enable authentication header
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1

# block direct access to kirby and the panel sources
RewriteRule ^kirby/(.*) index.php [L]

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

</IfModule>

# compress text file responses
<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE application/json
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
</IfModule> 

Something strange is that the same site works on another server. The problem may comes from the hosting. It is still running on an OVH subscription from 2010.

Any idea ? Thanks for your help.

[texnixe]

Then PATCH requests are disabled on your server. Please get in touch with their support to find out if you or them can enable it.

[Adrieng]

Ok, I’ll see with them.

Thanks Texnixe

[texnixe]

@Adrieng We will move to using only GET and POST requests with Kirby 3.4.

[Adrieng]

By chance, any idea about how to enable PATCH requests on a OVH web hosting ?

[texnixe]

Shared hosting or a VPS? But no, I don’t. On some hosters, people could enable PATCH and DELETE requests via .htaccess, but in most cases, the hoster had to do that (if they are willing to).

[Adrieng]

Problem solved by disabling the “firewalls” that appears to be useless.

Thanks @texnixe