Warning: require(ts_common.php ): Failed to open stream: No such file or directory in /var/www/html/2.mixed.php on line 19

Fatal error: Uncaught Error: Failed opening required 'ts_common.php ' (include_path='.:/usr/local/lib/php') in /var/www/html/2.mixed.php:19 Stack trace: #0 {main} thrown in /var/www/html/2.mixed.php on line 19