<@ULVA73B9P> Howdy. How can I get Prefect to inclu...
# ask-community
m
@Marvin Howdy. How can I get Prefect to include stack traces when a flow run fails with an error? I'm just getting the name and message of the error, but no stack trace 😞
m
Hey there! To help you with displaying stack traces when a flow run fails in Prefect, I'll first need to determine the version of Prefect you're using since the solution might differ between Prefect 2.x and 3.x. Let me investigate the documentation for both Prefect 2.x and 3.x to find the most relevant information. I'll get back to you shortly. It seems I made an error by not providing search queries. Let me correct that and search the Prefect documentation for guidance on how to enable detailed error reporting, including stack traces, for both Prefect 2.x and 3.x. Please bear with me for a moment. I found some relevant information on how to get Prefect to include stack traces when a flow run fails: 1. Prefect 2.x: It seems that detailed error handling, including stack traces, might be related to the logs generated during flow execution. You can check your logs via the Prefect dashboard or configure your flow to increase logging details. - Also, implementing state change hooks might help in managing error handling and logging specific behaviors when an error occurs. - For more details on these, you can look at the troubleshooting guide and state change hooks. 2. Prefect 3.x: Similar to Prefect 2.x, your best bet would be to increase the logging level to ensure that stack traces are captured. You can reference the logs in Prefect Cloud or your configured logging solution. - If logs are appearing empty or don't contain stack traces, inspect your
worker
logs, as they might have additional information. - More information can be found in the troubleshooting cloud guide. If you're still not seeing stack traces as needed, consider configuring your Prefect logger directly within your flow to ensure detailed logs. If these suggestions do not help, please specify your current Prefect version, and we can look further into it or explore any recent GitHub issues or updates that might be relevant.
m
@Marvin The error is happening in a Flow Run, on Prefect 3.x
m
Great, focusing on Prefect 3.x will help us find a more tailored solution for including stack traces in your flow run errors. In Prefect 3.x, logging plays a crucial role in capturing detailed information, including errors and stack traces. Here’s what you can do to ensure stack traces are included: 1. Logging Level: Ensure that the logging level is set to capture
DEBUG
or more verbose logs, as stack traces are typically included in these logs. You might need to configure the logger within your flow to make sure it's capturing everything you need. 2. Inspect Worker Logs: Sometimes, stack traces might not appear directly in flow logs but can be found in worker logs. Make sure to inspect these logs if the flow logs are not providing enough detail. 3. Prefect Cloud Logs: If you are using Prefect Cloud, check the logs available in the dashboard. Prefect Cloud often provides more detailed logs, including stack traces. You can refer to Prefect's troubleshooting information for more guidance here. If adjusting the logging settings doesn't resolve the issue or you need more specific implementation instructions, please let me know!