I've been using phpBB for years but this is the first time I have a problem that I can't solve by myself.
Everything was working fine with phpBB 3.1.9, PHP 5.5 and MySQL5.5 on my server, but my hosting was charging me around $7/month for PHP5.5 support so I've decided to upgrade to PHP 7.0 and phpBB 3.2.
The server is running PHP 7.0 already. To update to phpBB 3.2, I've tried using the automatic update package 3.1.9 -> 3.2 and doing it manually (keeping the folders images/, files/, store/, ext/, config.php and uploading the new files), but I keep getting this error:
I really don't know what to do. Any idea is welcome!