@Marvin my self-hosted prefect server ui loads, but there is no content shown i.e. no flows listed, no flow-runs, no content on the dashboard. The dashboard UI elements load, just not the content. The CLI seems to be working fine. I have tried restarting the prefect server, rebooting the ec2 instance on which it is running, and resetting the sqlite db. All to no avail. Have you any suggestions of what to try next?

It seems that the results from the document search and GitHub issues are not directly troubleshooting the specific issue you're encountering with the Prefect UI showing no content. However, based on common web application deployment issues, here are a few things you could try next: 1. Check Browser Console: Open your browser's developer tools and check the console for errors. It might provide clues such as failing to load resources or JavaScript errors. 2. Web Server Configuration: Ensure that the web server (nginx, Apache, etc.) used to serve the Prefect UI is configured correctly. Proxy rules and headers should properly forward requests to the Prefect server. 3. Prefect Server Version Compatibility: Sometimes issues like these can be related to compatibility. Check if you’re running a compatible version of Prefect Server with your Prefect Core. You can check the latest version of Prefect using the following:

python
from functions import get_info
print(get_info(topic="latest_prefect_version"))

4. Prefect Server Logs: Check Prefect server logs for any warnings or errors. These logs can provide invaluable information about what might be wrong. 5. Firewall or Network Configuration: Make sure that there is no firewall or network configuration preventing the loading of resources for your Prefect UI. If none of these steps resolve the issue, it would be advisable to reach out directly to Prefect support or to post a detailed issue on their GitHub repository, including information about your setup and any errors you're seeing in the browser console or server logs. In the meantime, if you have any other information that you can share about errors in the browser console or specific configurations for your Prefect server and UI setup, I could try to assist you further.

1. The broswer console shows many 403 AxiosError errors

The existence of multiple 403

AxiosError

in the browser console indicates that the browser requests from the Prefect UI to the server backend are being forbidden. Such errors are typical symptoms of permission issues, where the server might be rejecting requests due to authentication or authorization failures. You can address these 403 errors by checking the following: 1. Prefect Server Authentication Settings: Ensure that the Prefect server is properly configured with the correct authentication and permissions settings. The Prefect documentation does not explicitly cover

AxiosError

or HTTP 403 errors, but you should still ensure your server settings are consistent with Prefect's guidelines for security. 2. API Endpoints: The server's API endpoints should allow requests from the Prefect UI. If you are using reverse proxying or a similar setup, ensure the paths and permissions are correctly set up. 3. Browser Access and Cookies: Check to make sure the browser is allowed to store cookies for your Prefect UI and that no plugins or extensions are interfering with the requests. 4. Cross-Origin Resource Sharing (CORS): Misconfiguration in CORS policy might lead to 403 errors if the frontend (Prefect UI) and backend are on different domains or ports. 5. Log Analysis: Review the server logs for authentication errors or request rejections that correspond to the times you are seeing the 403 errors in the browser console. These logs may contain more specific information about why access is being denied. In case you're using third-party software like Databricks with Prefect, ensure that API requests meet the requirements set by those services, including proper authentication tokens or API keys, as hinted in some of the documents retrieved (Prefect-Databricks Jobs Error Codes). Given that the provided documents and GitHub issues don’t contain detailed solutions to your problem, you may want to discuss your issue in the Prefect discourse community or directly seek support from Prefect via email. For a more targeted approach, creating a GitHub issue on the Prefect repository with details of the errors and your setup could also prompt assistance from the developers or community. Remember to include as much detailed information as possible, such as server configuration, any proxies in use, browser details, and a detailed description of the errors from the console.

Problem found and fixed; it was CSRF protection