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The error indicates that the flow is attempting to create a flow run while expecting to connect to Prefect Cloud's API server, but cannot reach the API due to lack of an internet connection. To run a flow locally without an internet connection, you need to ensure that the flow does not depend on Prefect Cloud services or is configured to run in a way that does not require communicating with Prefect Cloud during execution. If you intend to use Prefect Cloud as the backend API server, usually you need to configure the local environment with the location of the API and authenticate with it, but this is not possible without internet access. For further details on connecting and troubleshooting with Prefect Cloud, refer to the documentation: - Connecting & Troubleshooting Prefect Cloud To address the issue without an internet connection, one option could be to use Prefect Core's local server mode, which allows for local execution and tracking of flow runs without connecting to Prefect Cloud. However, for specific instructions on configuring Prefect Core to run flows without Prefect Cloud or advice on running flows fully offline, additional context or official documentation would be necessary. Unfortunately, I could not find a direct solution to your problem in the links provided. If the links do not address your question, I would recommend reaching out to the Prefect community or support for further assistance.