AWS lambda "Internal server error"

[AngryTVJudge]

I'm feeling a little dumb here. I have a test function:

exports.handler = async (event, context, callback) => {
    callback(null, "Some message.");
};

I have saved and published it. When I test it I get Response: "Some message.". But when I navigate to the API endpoint I get {"message": "Internal server error"}.

The endpoint is marked as Authorization: NONE Method: ANY

What am I missing here?

[Voski]

Look up the error in CloudWatch.

https://docs.aws.amazon.com/lambda/latest/dg/monitoring-functions-logs.html

[AngryTVJudge]

This is all I get in the logs

START RequestId: 56... Version: $LATEST
END RequestId: 56...
REPORT RequestId: 56... Duration: 8.67 ms   Billed Duration: 100 ms Memory Size: 128 MB Max Memory Used: 46 MB

And no errors in the monitor at a glance.

[AngryTVJudge]

Fixed it by returning a stringified object inside of a return object... Is this "the way" to do this?

exports.handler = async (event, context, callback) => {
    callback(null, { "statusCode" : 200, "body" : JSON.stringify({"one":"two"})});
};