Fatal error: Uncaught Error: Class "TheSeer\Tokenizer\Exception" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\theseer\tokenizer\src\NamespaceUriException.php:4 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\theseer\tokenizer\src\NamespaceUriException.php on line 4