another inconsistency from the Netlify example on Github. this snippet

app.use((err, req, res, next) => {
    console.log(err);
    res.send(
        "Something went wrong. Please see error here: https://app.netlify.com/sites/hardcore-goodall-fd3278/functions/api"
    );
});

results in an error because

req

and

res

should be the first and second arguments, respectively. I have no idea how this could work as it is written now. I am not even sure

err

is part of the function signature. I just put

req

and

res

as 1st and 2nd args and it worked out.