Fatal error: Uncaught Error: Interface "ParagonIE\ConstantTime\EncoderInterface" not found in C:\xampp\htdocs\londoncityroom\vendor\paragonie\constant_time_encoding\src\Base64.php:38 Stack trace: #0 {main} thrown in C:\xampp\htdocs\londoncityroom\vendor\paragonie\constant_time_encoding\src\Base64.php on line 38