Fatal error: Uncaught Error: Class "Firebase\Auth\Token\Exception\InvalidToken" not found in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\Firebase\Auth\Token\Exception\InvalidSignature.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\www\prohelp\vendor\kreait\firebase-tokens\src\Firebase\Auth\Token\Exception\InvalidSignature.php on line 9