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I have a working API that when I hit from Query keeps returning 400 error no matter what I do I understand that without showing API documentationSorry for this title but i really need hlp I don't know why that's not working and i searched a lot So I'm working with Spotify Api and I want to access to the Access_Token The documentation sayThat's an error Error invalid_request Stack Overflow 400 That's an error Error invalid_request Google sign in authentication is working on my localhost But not on the actual server, my server ip address is something like 54 * , here is the Google auth details I have added , both localhost and my server ip address in the authorized javascript origin fields, but it works only on localhost Robot 400 That S An Error Mask By Aminaob Redbubble What does a 400 error mean