NO_RESPONSE_FROM_FUNCTION

The application did not respond correctly, this is likely due to an exception being thrown from the function handler.

The NO_RESPONSE_FROM_FUNCTION error occurs when a function invocation completes without returning a response.

This might happen if the function encounters an error that prevents it from responding,

or if it fails to generate a response within the allowed execution time.

Potential causes include:

A global uncaught exception

A global unhandled rejection

A deployment that introduced incorrect syntax

502 NO_RESPONSE_FROM_FUNCTION Bad Gateway

Troubleshoot

Verify return statements:

Ensure that the function has the necessary return statements to generate a response

Check the function logs :

Open the realtime request logs for the application in a separate tab - this tab must be kept open while reproducing the error

Review realtime logs :

Repeat the application behavior that led to the error being thrown and review the realtime request logs where it will now show

Use the information contained within the error logs to understand where the function is failing

Use log drains :

If you're yet to implement a Log Drain , you can create one to persist errors from Serverless Functions

Check external dependencies:

If the function relies on external services or APIs, ensure they are responding in a timely manner