Here is the scenario:

• I had a Chalice app with two endpoints /getStream and /deleteStream.
• I migrated them to Nextjs functions eliminating the need for a Chalice app.
• So, I deleted the API Gateway but retained the Lambda function for backup.

import re
from urllib import request
from chalice import Chalice, Response
from chalicelib.streamEngine import StreamEngine
app = Chalice(app_name='mux-streaming')

print(app, "chalice app")

#  for testing purpose
@app.route('/', methods=['GET'], cors=True, authorizer=None)
def hello():

    print("hello")
        
    return "hello"


@app.route('/getStream', methods=['POST'], cors=True, authorizer=None)
def get_stream():
    request = app.current_request.json_body
    
    creatorID = request['creatorID']
    streamName = request['streamName']
    streamType = request['streamType']
        
        
    streamer = StreamEngine()
    return streamer.getStream(creatorID, streamName, streamType)
    

@app.route('/deleteStream', methods=['POST'], cors=True)
def delete_stream():
    request = app.current_request.json_body
    
    streamID = request['streamID']
    stream = StreamEngine()
    return stream.deleteStream(streamID)

• Due to some reason, I want to migrate back to Chalice app but I don’t have infra-as-code as it was done by another dev.
• So, I added an API Gateway from AWS Console.

• But the API Gateway throws authorization errors:

On GET https://invoke-url/prod:

{
  "message": "Authorization header requires 'Credential' parameter. Authorization header requires 'Signature' parameter. Authorization header requires 'SignedHeaders' parameter. Authorization header requires existence of either a 'X-Amz-Date' or a 'Date' header. Authorization=asdf"
}

which makes no sense as I don’t have any authorization whatsoever.

On POST https://invoke-url/prod/getStream:

{
  "headers": {},
  "multiValueHeaders": {},
  "statusCode": 500,
  "body": "{"Code":"InternalServerError","Message":"Unknown request."}"
}

To make sure API Gateway isn’t the imposter, I tried it with other lambdas and it just works fine.
Any help will be appreciated. Thanks