Somehow the argument to opcache_invalidate() got messed up.
$this->cache_file is the correct argument in functions_messenger.php:process, maybe it got mixed up. It should be changed back to $file.
Somehow the argument to opcache_invalidate() got messed up.
$this->cache_file is the correct argument in functions_messenger.php:process, maybe it got mixed up. It should be changed back to $file.