Next.js Backend not responding

Our website was built with Next.js and our backend api doesn’t respond to any requests. It works locally and we’ve run through the common problems in netlify community but can’t find anything that matches our issue. Thank you for your help!

what kind of nextjs backend are you trying to build?

Oh, I see, I’ll need to rewrite my app then. I’ll read up on the solutions in your linked post more. Thank you!