+ throw exception is guids not appropriated to local site url

* basename extraction support multibyte strings filenames

src/Support/helpers.php

@@ -0,0 +1,10 @@
+<?php
+
+if (!function_exists('mb_basename')) {
+    function mb_basename(string $file)
+    {
+        $filenameParts = explode('/', $file);
+
+        return end($filenameParts);
+    }
+}