Fatal error: Uncaught Error: Interface 'PhpCsFixer\Fixer\FixerInterface' not found in E:\xampp\htdocs\www\yunwei\qr251\vendor\phar-io\manifest\tools\php-cs-fixer.d\PhpdocSingleLineVarFixer.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr251\vendor\phar-io\manifest\tools\php-cs-fixer.d\PhpdocSingleLineVarFixer.php on line 19