vendor and env first commit

vendor/league/flysystem/src/UnableToProvideChecksum.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\Flysystem;
+
+use RuntimeException;
+use Throwable;
+
+final class UnableToProvideChecksum extends RuntimeException implements FilesystemException
+{
+    public function __construct(string $reason, string $path, ?Throwable $previous = null)
+    {
+        parent::__construct("Unable to get checksum for $path: $reason", 0, $previous);
+    }
+}