Unable to determine event source based for running an async lambda function

[vincevannoort-egalit]

Dear Reader,

I have gotten the following error when trying to configure a function to run async, running it sync does work.

Any ideas why this is happening?

{
    "errorType": "Error",
    "errorMessage": "Unable to determine event source based on event.",
    "stack": [
        "Error: Unable to determine event source based on event.",
        "    at getEventSourceNameBasedOnEvent (/var/task/node_modules/@vendia/serverless-express/src/event-sources/utils.js:79:9)",
        "    at proxy (/var/task/node_modules/@vendia/serverless-express/src/configure.js:37:51)",
        "    at Runtime.handler (/var/task/node_modules/@vendia/serverless-express/src/configure.js:95:12)",
        "    at Runtime.handleOnce (/var/runtime/Runtime.js:66:25)"
    ]
}

[brett-vendia]

As in you're doing an async invoke within your code? What does the event body look like?

[brettstack]

Do you have example code?

[aliamrani]

Hi Vince,

I just ran into the same issue and for our case, in which we invoke our Lambdas through API Gateway, enabling the "Use Lambda Proxy integration" option in the integration request of the method did the job for me.

Hope it helps.

[eHattori]

I have the same problem here, any else solution for this case?

[JeffML]

I tried the solution offered here and it worked for me. Does not seem like the correct way to do it, though.