Error deploying Google AI Studio app to Google Cloud

I am a newbie – maybe a vibe coder. I am using the Google AI Studio to create an app. When I click the Deploy button, I get this error:

Failed. Details: The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable within the allocated timeout. This can happen when the container port is misconfigured or if the timeout is too short. The health check timeout can be extended. Logs for this revision might contain more information

This is odd because all the code is generated by the AI Studio. Wouldn’t Google’s own product be able to properly deploy its code to its own server? I gave the error message to AI Studio and it tried changing the code but same error occurs.

As I mentioned, I am a newbie non-coder so my question is not so much how can I fix this myself in the code, but am I missing something in the process of deployment or in what I am asking the AI Studio to do?

Thanks.

Replying to my own post here –

Even when I make a very simple Hello World app, it has the same error.

Are others able to get this to work? What am I doing wrong?

Are you getting the same error : container failed to start and listen on PORT 8080 when trying to deploy the hello world app ?

Yes, it is the same error.