Mysql_upgrade fails, table is corrupted
10.2.6 is a really old version from 2017, and the first table reelase..

Consider upgrading to latest 10.2 version (e.g. 10.2.25).

You table probably isn't corrupt, just has the wrong definition. In 10.2.6 it should look like this. Look to see what you need to alter to make this your table definition.