Nextcloud version : 20.0.4
Operating system and version : Ubuntu 20.04
Apache or nginx version : Apache2.4.41
PHP version : 7.4.3
Can not open settings page.
Settings page shows ERR_EMPTY_RESPONSE.
Appache log
[Wed Dec 23 18:34:59.012845 2020] [php7:error] [pid 16078] [client XXX.XXX.XXX.XXX:XXXX] PHP Fatal error: Class oca\\support\\subscription\\subscriptionadapter wasn't preloaded in /var/www/html/nextcloud/apps/support/lib/Subscription/SubscriptionAdapter.php on line 30
Nextcloud log
{"reqId":"KeOZfR24LrTEz2dQZwTg","level":3,"time":"2020-12-23T09:34:59+00:00","remoteAddr":"XXX.XXX.XXX.XXX","user":"XXX","app":"PHP","method":"GET","url":"/index.php/settings/user","message":"Class oca\\support\\subscription\\subscriptionadapter wasn't preloaded at /var/www/html/nextcloud/apps/support/lib/Subscription/SubscriptionAdapter.php#30","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36","version":"20.0.4.0"}