push_project_to_gcs is not working with credentials stored in a prefect block

[uuazed]

I've created a new project using the docker-gcs template. The credentials of my GCP service account are stored in a prefect block. According to the prefect project tutorial, this is the recommended setup. This is the push section in my deployment.yaml :

push:

• prefect_gcp.projects.steps.push_project_to_gcs: requires: "prefect-gcp>=0.4.1" bucket: "somebucketname" folder: somefolder credentials: "{{ prefect.blocks.gcp-credentials.gcp-cred }}"

When initiating a deploy via prefect deploy --name ... , the step fails with AttributeError: 'str' object has no attribute 'keys'

Expectation / Proposal

Using credentials stored in a prefect blocks works. Even better, I can use a prefect gcs block directly.

Traceback / Example

• [ ] I would like to help contribute a pull request to resolve this!

[uuazed]

recreating the credentials block solved the issue :shrug:

[desertaxle]

An older version of the GcpCredentials block saved the service_account_json fields as JSON string instead of an object, which is the root cause of this error. Recreating the GcpCredentials block will use the new version and save the service_account_json field in with the correct type. To guard against service_account_json values that are saved as JSON strings, we should attempt to parse the service_account_json field value if it is a string.