Task database error

Nextcloud version
Operating system and version unknown Linux
Server version: Apache/2.4.46 (Unix)
PHP 7.3.21

The issue you are facing:

The server reports to my caldav client (Linux, Evolution):

“The reported error was “SQLite error code ‘11’: database disk image is malformed (statement:SELECT ECacheOBJ FROM ECacheObjects WHERE ECacheUID=‘57e7c9f8622f5e7322f7ecba89b8234108a596bb’ OR ECacheUID LIKE ‘57e7c9f8622f5e7322f7ecba89b8234108a596bb
%’ ORDER BY ECacheUID)”.”.

However, I have a mysql server running.

The server environment has not changed, but this error appears the first time after a day of running nextcloud 20.

This is only appearing for a singular nextcloud tasks list.

Is this the first time you’ve seen this error? yes