The new version of phpBB will be available soon, just yesterday was released the version 3.3.0-b2.
Among the many news for developers and not only there is this one, it will not be possible anymore to enable
Debug, SQL explain and Load time from the
To do this now you need to add the code below to any
.yml file somewhere, also into an existing enabled extension (or code a small ext on purpose) - then purge the cache. If you have any doubts ask without hesitation.
To enable debug add these 2 lines to the above.
debug.show_errors: true debug.exceptions: true