Hey everyone! I am trying to integrate prefect with modal but my deployment does not seem to work I keep getting the following error.

Failed due to a(n) NameError caused by accessing a local variable 'sb' without a value associated with it. Further investigation should focus on where 'sb' is defined and how it is being used in the context of the Prefect flow.

I think it's something to do with sandboxes. The invocations are popping up in the modal dashboard but without any logs: Has anyone experiences something similar before? Does anyone have any tips to assist?

hi @Antreas Pogiatzis - do you have logs in the prefect UI for the failed flow run? i assume this

Failed due to a(n) NameError caused by accessing a local variable 'sb' without a value associated with it. Further investigation should focus on where 'sb' is defined and how it is being used in the context of the Prefect flow.

is the flow run error summary, which suggests there's unbound variable issue in your code

Hello. Thank you for the response! Yes locally it runs. I am trying to do a minimal deployment with the following code:

@flow
def hello_world():
    print("Hello World")

if __name__ == "__main__":
    deployment = hello_world.deploy(
        name="subdomain-discovery",
        work_pool_name="bb-modal-pool",
        image="<http://ghcr.io/apogiatzis/hello-image:latest|ghcr.io/apogiatzis/hello-image:latest>",
    )

hey! can you share your workspace id? I think you're right something may be off in the integration

The docker image is pushed to a GitHub private registry if that makes any difference but I've set the credentials in modal

There does seem to be a bug in how the error is being surfaced, I can get a fix out for that. The error I'm seeing is that it looks like it's trying to resolve a secret that is named

""

Thanks for looking into this! Although my deployment code looks like this:

@flow
def hello_world():
    print("Hello World")

if __name__ == "__main__":
    deployment = hello_world.deploy(
        name="subdomain-discovery",
        work_pool_name="bb-modal-pool",
        image="<http://ghcr.io/apogiatzis/hello-image:latest|ghcr.io/apogiatzis/hello-image:latest>",
    )

I've manually updated my job variables from UI to look like the screenshot attached based on this. If I use the set the image as a dictionary in the python code deployment it raises an exception when building the image.

your secret in modal needs to have the keys:

```REGISTRY_USERNAME: ...

REGISTRY_PASSWORD: ...```

Yes I have this set. So If I understood correctly then my secret name is not being picked from the job variables?

oh I see, sorry yes I meant as

{job_variables={"image": ...}}

> The error I'm seeing is that it looks like it's trying to resolve a secret that is named

""

Could it possibly be referring to the secret in modal (My private registry credentials)?

you're not passing any other secrets to include in your image right? just the one to access the registry?

can you set the tag to the full url though, not just

latest

?

Just tried again with the full image url as the

tag

value but I'm still get same result.

you're not passing any other secrets to include in your image right? just the one to access the registry?

I'm not passing any secrets explicitly to be honest. I was under the impression that modal will automatically pick up REGISTRY_USERNAME and REGISTRY_PASSWORD

ahhh!!! yes I think that is exactly it

Still the same error 😅 Do you by any chance see a different error message now?

theres a space after

<http://ghcr.io|ghcr.io>

Omg sorry 😅

apologies, this is the error that you should be seeing directly once I get this fix out

No worries thanks for looking into it!