Fatal error: Uncaught Error: Interface "League\Flysystem\FilesystemAdapter" not found in C:\xampp\htdocs\adminlte3\vendor\league\flysystem\src\Local\LocalFilesystemAdapter.php:49 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\league\flysystem\src\Local\LocalFilesystemAdapter.php on line 49