Fatal error: Uncaught Error: Class "Pion\Laravel\ChunkUpload\Handler\AbstractHandler" not found in /home/custom/public_html/katiekarr/vendor/pion/laravel-chunk-upload/src/Handler/SingleUploadHandler.php:14 Stack trace: #0 {main} thrown in /home/custom/public_html/katiekarr/vendor/pion/laravel-chunk-upload/src/Handler/SingleUploadHandler.php on line 14