Problems upgrading to 14.0.4

Hey Community,

after trying to upgrade to 14.0.4 on my nextcloud nothing works at allā€¦
iā€™m a noob - could you try to help me, fix this problem?
thanks so much.

ich you need further information iā€™ll hand them out asap.

merry christmas.
thank you so far. here is the error log

Aktualisierung auf 14.0.4

Doctrine\DBAL\Exception\DriverException: An exception occurred while executing ā€˜INSERT INTO oc_appconfig (appid,configkey,configvalue) SELECT ?,?,? FROM oc_appconfig WHERE appid = ? AND configkey = ? HAVING COUNT(*) = 0ā€™ with params [ā€œcoreā€, ā€œoc.integritycheck.checkerā€, ā€œ{ā€œcoreā€:{ā€œINVALID_HASHā€:{ā€.htaccess":{ā€œexpectedā€:ā€œ2174fedbaf993a132ee886739aa18cdedf26e9b2087b92e5265905356622a9100425150c891afac5843f861fa248bcfa375ee46eaf88ae3b350cc0874af6fec7ā€,ā€œcurrentā€:ā€œeb22197f9e8bf7ca836aa43e01ce68b306066d2ab018f883d16b82a5e7e360cb0e752b33e6ea4e2f7087be8d2f965fe284bfc55f79f36b4f6f77ffb7f8b16d36ā€},".user.ini":{ā€œexpectedā€:ā€œ467d4f028c447895716a2b7859ed6e569f8ee34b87b51d73dab2e6a9ca4fbe63172c7be3e365ae864a60408286afcce852dd38ee544b61685ed4ee5e021fecb0ā€,"current