Cast to ObjectId failed for value “profile” (type string) at path “_id” for model “User”

you need to move /profile function above /:id function in userRoutes.js. I mean move:

...

above

userRouter.put( “/:id”,isAuth,isAdmin,

...

like this:

https://github.com/basir/mern-amazona/blob/master/backend/routes/userRoutes.js#L33