It seems the core issue here is related specifically to permissions with Google Cloud Run accessing the Prefect Docker image stored in Google's Artifact Registry. The error message indicates that the service account

<mailto:service-850000352187@serverless-robot-prod.iam.gserviceaccount.com|service-850000352187@serverless-robot-prod.iam.gserviceaccount.com>

must have the appropriate permissions to read the image located at

us-east1-docker.pkg.dev/prefect-org-github-actions/dockerhub-mirror/prefecthq/prefect:2-python3.9

. The information provided in the search is not directly related to your issue but gives some insight into configuring permissions correctly in different cloud environments, which is tangentially helpful. Common permission-related issues include incorrect IAM policies or missing roles. Regarding Prefect and Google Cloud Run, you will need to ensure that: 1. The service account used by Cloud Run has the necessary permissions (Artifact Registry Reader role or similar) to access the Docker image from the Artifact Registry. 2. The image URL is correct and the image exists in the specified repository. 3. If you just enabled the Cloud Run API or updated permissions, there could be a delay as permissions propagate; waiting a few minutes might resolve the issue. Since the results from the documentation were not providing a direct answer, I recommend checking the permissions of the service account in your Google Cloud IAM settings first. If that doesn't solve your problem, we can delve further into searching documentation or GitHub issues related to similar permission problems with Cloud Run and Prefect to help find a resolution. I found a Prefect deployment guide that may include information helpful for setting up permissions correctly: Prefect push work pools. Additionally, checking Prefect GCP worker guide might provide some insights related to your GCP project and workers configuration that could be essential in solving the issue. There are also some GitHub issues related to infrastructure problems, such as an intermittent fatal error during deployment with Docker infrastructure, a cloning error during pull step in deployment, and an issue regarding `runpy` engine import unpredictable behaviour warnings, although they do not seem directly applicable to your permissions issue. If changing permissions does not resolve your issue, it would be advisable to raise a new issue on the Prefect GitHub repository with the specific details so the Prefect team can help troubleshoot the permissions error.