Critical Error after Updating WordPress to 6.4.2

  • Getting a fatal error when trying to add new calendars or edit them.

    I don’t think it is compatible with PHP 8.0.

    6 PHP Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /nas/content/live/beaversbendad1/wp-content/plugins/wp-ical-availability/views/calendar/edit-calendar.php:50#012Stack trace:#012#0 /nas/content/live/beaversbendad1/wp-content/plugins/wp-ical-availability/views/calendar/edit-calendar.php(50): in_array(7, NULL)#012#1 /nas/content/live/beaversbendad1/wp-content/plugins/wp-ical-availability/include/pluginStructure.php(14):

    The page I need help with: [log in to see the link]

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