Fatal error: Uncaught Error: Class "PhpParser\Lexer" not found in C:\mywamp\sites\allsite\calcomposer\vendor\nikic\php-parser\lib\PhpParser\Lexer\Emulative.php:19 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\nikic\php-parser\lib\PhpParser\Lexer\Emulative.php on line 19