PHP Fatal error for fv-wordpress-flowplayer/models/checker.php

Hello,
I’ve found an error in the error.log of the webserver:

[29-Jan-2023 09:57:26 UTC] PHP Warning:  Undefined variable $is_live in /home/userxxx/public_html/wp-content/plugins/fv-wordpress-flowplayer/models/checker.php on line 290
[29-Jan-2023 09:57:26 UTC] PHP Fatal error:  Uncaught TypeError: Cannot access offset of type string on string in /home/userxxx/public_html/wp-content/plugins/fv-wordpress-flowplayer/models/checker.php:363
Stack trace:
#0 /home/userxxx/public_html/wp-includes/class-wp-hook.php(308): FV_Player_Checker->checker_cron()
#1 /home/userxxx/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#2 /home/userxxx/public_html/wp-includes/plugin.php(565): WP_Hook->do_action()
#3 /home/userxxx/public_html/wp-cron.php(188): do_action_ref_array()
#4 {main}
  thrown in /home/userxxx/public_html/wp-content/plugins/fv-wordpress-flowplayer/models/checker.php on line 363

I’ve installed:
FV Player version: 7.5.31.7212
FV Player Pro version: 7.5.30.7212
WordPress Version: 6.1.1
PHP Version: 8.0.26
MySQL Version: 8.0.32

Could you help me understand how to solve this issue?

Thanks

Regards,
Tiziano.