There is a slight change in how Apache 2.4.26 communicates environment variables to PHP-FPM. This change prevents phpBB from receiving correct path information. The solution is to add
ProxyFCGIBackendType GENERICto the Apache configuration file.
I've encountered following errors cause by this change.
- No route found for "GET /install/app.php" error while attempting to install phpBB 3.2.
- Links are broken if phpBB is placed in a subdirectory, "example.com/phpBB3/viewtopic.php" -> example.com/viewtopic.php
- Invaild paths to style sheets