I am getting error 400 on my website! [400 Error Page]

The 400 Bad Request error is often caused by entering or pasting the wrong URL in the address window but there are some other relatively common causes as well.

How to Fix the 400 Bad Request Error

Check for errors in the URL. The most common reason for a 400 Bad Request error is because the URL was typed wrong or the link that was clicked on points to a malformed URL with a specific kind of mistake in it, like a syntax problem.

Also try clearing your browser's cookies and your DNS cache.