When I try to changed my docker image from nextcloud:20-apache to nextcloud:21-apache, I ran into issues with memory first.
Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 438272 bytes) in /var/www/html/3rdparty/composer/autoload_real.php on line 37
I got around that problem by passing
php -d memory_limit=1G occ upgrade.
After that, it fails with
Unknown database type name requested, Doctrine\DBAL\Platforms\PostgreSQL100Platform may not support it.
I am not sure how to fix this, can someone please help me out with this one? I am running PostgreSQL 12 and it was working fine with NC20.