Hostname invalid

Hostname "pelaker.com%2F%D9%84%DB%8C%D8%B3%D8%AA-%D8%A7%D9%85%D9%84%D8%A7%DA%A9-%D8%A7%D8%B3%D8%AA%D8%A7%D9%86-%D8%A7%D9%84%D8%A8%D8%B1%D8%B2-%D9%88-%DA%A9%D8%B1%D8%AC" is invalid