Are you trying to use it from the client?

try to add the node:fs

I think when you are using NextJS you can directly access the fs module. NextJS doesn’t expose all of node APIs. So instead of using module which depend on fs module, use other modules.

no, I'm not using fs anywhere in my code.

Just wanted to check, it's always the obvious things that you forget

does it work if you use fs directly in your server code?

make sure the file where u export anything that uses fs is not imported into a clientside component

That can happen if u for example export multiple functions from a single file, and one function u import it on client or in the middleware where fs is not supported

Thanks, guys I solved it, So it turns out I was importing a server-side signOut function (next-auth) in a client component.