Module returns error
Error: Call to undefined function each() in page_manager_cache_lifetime_page_manager_variant_operations_alter() (line 27 of /var/www/html/web/sites/all/modules/contrib/page_manager_cache_lifetime/page_manager_cache_lifetime.module)
Install the module on the environment with PHP 8 and go to the Edit page of any of the pages on admin/structure/pages/edit page.
Update code.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Moving to dev branch and status to needs review
This is quite straightforward I'll go with RTBC, thank for fixing this @akozoriz