What is Error 504 gateway timeout | What are the causes | How to Fix it? Just like the causes, there can be multiple solutions to a single problem. The case is no different with the Error 504 gateway timeout. There are six possible causes of this error and so are the solutions. The solution to the error will depend on the cause of the problem. By now you must have understood that no matter what the cause is, the error 504 is a temporary problem. So you can try to refresh the web page. In most of the cases, this fixes the problem. In most browsers, you can do this just by pressing the F5. And if not you will see a refresh button on the top of your page, near the address bar.



