Merge pull request #29 from ibrahemhamdy1/fix-toFlat-error

Fix the get_object_vars().

Author: kg-bot

src/Classes/ExportLocalizations.php

@@ -200,7 +200,7 @@ public function toFlat($prefix = '.')
         $default_key = $default_locale.$prefix.'__JSON__';
         if (! array_key_exists($default_key, $results)) {
             $buffer = array_keys(
-                get_object_vars($default_json_strings)
+                $default_json_strings ? get_object_vars($default_json_strings) : []
             );
 
             $results[$default_key] = array_combine($buffer, $buffer);