You must have access_compat module enabled, You should read this: https://httpd.apache.org/docs/2.4/howto/access.html

My Apache httpd 2.4.54 gave error 503, when I checked the log it said:

.htaccess: Invalid command 'Order', perhaps misspelled or defined by a module not included in the server configuration

And I found that all the .htacess had lines with Order, Allow and Deny which are deprecated in version 2.4

Thank you, but as I said before PHP v7.4 is about to reach EOL (in November if I remember correctly) so the only option I have is not to use it, at least until it is compatible with PHP 8.x also it would be nice to have it compatible with Apache 2.4 and up, after all version 2.2 has not been updated...

Hey guys, I just downloaded the latest version, put it on an Apache 2.4 with PHP 8.1 and the first thing it did was tell me there were syntax errors in every .htaccess for the lines Order, Deny and Allow; these are deprecated in version 2.4, I replaced them with the new Require all granted or denied...