具有自定义授权方的内部服务器错误 AWS API Gateway

Question

I am trying to protect a lambda function using a custom authorizer (which validates a jwt) on AWS API Gateway. I also want to pass any queryStringParameters into my lambda function, so I want to keep my Integration request to be Lambda Proxy.

The custom authorizer is set, tested and working

Problem:

When I call this endpoint (after deploying), I receive a HTTP 500 response.

{
    "message": "Internal server error"
}

When I remove my custom authorizer OR deselect the lambda Proxy integration, I receive a normal output from my lambda

def lambda_handler(event, context):
    return {
        'status': 400,
        'body' : json.dumps('hello World'),
        'headers': {
            'Access-Control-Allow-Origin': "*"
        },
        'isBase64Encoded': 'false'
    }

Has anyone come across this? AWS documentation on this issue is sparse :/

Thank you!

Answer 1

I'm hitting myself in the head after this. The reason is because of what my lambda function was returning. It should've been

def lambda_handler(event, context):
    return {
        'statusCode': 400,
        ...

As opposed to

def lambda_handler(event, context):
    return {
        'status': 400,
     ...

If the AWS docs were better/i wasn't as obtuse :D