Exit error: Uncaught Error: Call to undefined function ignore_user_abort()

Hello, I had this working on my local server and have since transferred to our staging. I am getting this error:

[18-Jul-2022 20:49:16 UTC] [FATAL] Exit error: Uncaught Error: Call to undefined function ignore_user_abort() in /home/blc/webapps/blc/public/wp-content/plugins/youtubomatic-youtube-post-generator/youtubomatic-youtube-post-generator.php:3548 Stack trace: #0 /home/blc/webapps/blc/public/wp-content/plugins/youtubomatic-youtube-post-generator/youtubomatic-youtube-post-generator.php(2040): youtubomatic_run_rule() #1 /home/blc/webapps/blc/public/wp/wp-includes/class-wp-hook.php(307): youtubomatic_run_my_action_callback() #2 /home/blc/webapps/blc/public/wp/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters() #3 /home/blc/webapps/blc/public/wp/wp-includes/plugin.php(474): WP_Hook->do_action() #4 /home/blc/webapps/blc/public/wp/wp-admin/admin-ajax.php(187): do_action() #5 {main} thrown, file: /home/blc/webapps/blc/public/wp-content/plugins/youtubomatic-youtube-post-generator/youtubomatic-youtube-post-generator.php, line: 3548 - rule ID: 0!

I have revoked the license on my local and activated it on staging.