The Up Down Vote Lister was not incompatible with version 8, but not with the new version of PHP. If there were some corrections, there was information that it worked on version 8, so I fixed them, but I could not uninstall them either.

As a workaround, line 21 of packages / gnt_vote_list / attributes / gnt_ballotbox / controller.php in the add-on

use Concrete \ Core \ Foundation \ Object;

To

use Concrete \ Core \ Foundation \ ConcreteObject;

change to.

Line 184

class Value extends Object

To

class Value extends ConcreteObject

change to.

I want to use it if I can, but if I can't use it I just want to delete it.