Fatal error: Uncaught Error: Class "PhpParser\Lexer" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\nikic\php-parser\lib\PhpParser\Lexer\Emulative.php:22 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\nikic\php-parser\lib\PhpParser\Lexer\Emulative.php on line 22