display_errors = 'Off' prevents HTTP 500 on Error

[Alexander Herrmann]

according https://www.php.net/manual/en/errorfunc.configuration.php#ini.display-errors is the display_errors a string.

if I configure it to 'Off' unhandled php errors dont return an HTTP 500
I suspect that the error lies in the conversion to boolean here.

monolog/src/Monolog/ErrorHandler.php

Line 196 in b05bf55

 if (!headers_sent() && !(bool) ini_get('display_errors')) {