Wampserver problem

i m install kirby latest release on wampserver but dashboard install problem
why ?error

What is your PHP version?
Could you please provide the complete error message, including what is probably in your PHP error logs?

my currently php version 5.4

Yes, I get the same error with 5.4, could you use a more recent version? We recommend using PHP 7.x.

okay thank you very much

i will try recent version

This is actually a bug because we still support PHP 5.4, so the Panel should not throw an error. This will be fixed in the next version.

However, while we will fix it, we discourage using end of life PHP versions and highly recommend using the most recent version that is available to you, at the moment ideally PHP 7.1.x, see supported PHP versions.