Documents: Fix folder creation, remove ending dots see BT#18698

main/inc/lib/api.lib.php

@@ -6670,6 +6670,10 @@ function api_replace_dangerous_char($filename, $treat_spaces_as_hyphens = true)
         $treat_spaces_as_hyphens
     );
 
+    // Replace multiple dots at the end.
+    $regex = "/\.+$/";
+    $url = preg_replace($regex, '', $url);
+
     return $url;
 }