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Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/search.php on line 129

Fatal error: Uncaught Error: mysqli object is already closed in /var/www/html/mysql.php:85 Stack trace: #0 /var/www/html/mysql.php(85): mysqli->prepare() #1 /var/www/html/search.php(29): DatabaseManager->searchVideosByTitle() #2 /var/www/html/search.php(150): searchVideos() #3 {main} thrown in /var/www/html/mysql.php on line 85