Scheduling Page STOPS at Dec. 2023

All three scheduling pull down menus stop at December 2023. I can NOT send any emails manually without scheduling. How can this be fixed? Using PHPlist 3.6.15 and PHP version: 7.4.33. Thank you.

@Richard Look in the config.php file for the setting DATE_END_YEAR
Probably it is set to 2023.

Thank you. Thank you. All fixed.