Adding domain crashes the server but I can access website with domain

I have a weird problem. I can access my website two different ways with localhost 180.1….. and with domain also https://www.example.com. If I access website via domain and if I navigate in the website then url changes to 180.1…. . Right now my URL settings in wordpress are set as 180.1…. But if I try to enter domain address there then everything crashes.

What can be done with this problem?