Error on php 8

Hello, on the team page, there is an error on php 8

Fatal error: Uncaught Error: Unsupported operand types: string + string
/wp-content/plugins/sportspress/includes/class-sp-player-list.php on line 779

There are also errors with the countdown widget, if it is empty
https://monosnap.com/file/1lkQK7j8lLTmPGE311AAUp98Jpfq5N
then at the front end so
https://monosnap.com/file/sMRggK04KKZJh5ySqLWUq1R3gasxFe

Could you please fix it. Errors can be repeated on a standard theme without extraneous plugins.

Regards,
Themerex Team