Notice: Undefined variable: params in /home/manndolas/public_html/index.php on line 50

Fatal error: Uncaught TypeError: Argument 2 passed to Magento\Framework\App\Bootstrap::create() must be of the type array, null given, called in /home/manndolas/public_html/index.php on line 50 and defined in /home/manndolas/public_html/vendor/magento/framework/App/Bootstrap.php:117 Stack trace: #0 /home/manndolas/public_html/index.php(50): Magento\Framework\App\Bootstrap::create('/home/manndolas...', NULL) #1 {main} thrown in /home/manndolas/public_html/vendor/magento/framework/App/Bootstrap.php on line 117