<@ULVA73B9P> I'm getting following error when runn...
# marvin-in-the-wild
j
@Marvin I'm getting following error when running
prefect deploy local-dev-jp
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? Would you like to use an existing deployment configuration? [Use arrows to move; enter to select; n to select none]
┏━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃   ┃ Name         ┃ Entrypoint                 ┃ Description                        ┃
┡━━━╇━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
│ > │ local-dev-jp │ app/flow.py:sn_data_loader │ JP's local development environment │
└───┴──────────────┴────────────────────────────┴────────────────────────────────────┘
    No, configure a new deployment
not enough values to unpack (expected 2, got 1)
Why is that?
m
The error you encountered, "not enough values to unpack (expected 2, got 1)", typically occurs when the script or configuration expects a value in a specific format but doesn't receive it. This issue usually comes up when there are problems with the entrypoint you have specified. In the context of running
prefect deploy local-dev-jp
, it seems you might be missing an appropriate entrypoint format. The entrypoint should follow the format
"path/to/flow.py:function_name"
. ### Steps to Solve the Issue 1. Check Your Entrypoint Format: Ensure that the format of your entrypoint is correct. It must be in the form
path/to/flow.py:function_name
. 2. Inspect Your YAML Configuration: If you are using a YAML configuration for the deployment, double-check that it is correctly defined. Based on the available resources, make sure that parameters and other configuration settings are correctly set up to avoid this unpacking issue. 3. Consult Documentation: Refer to Prefect's deployment documentation to ensure you are following the correct setup procedures. ### Links to Resources - Prefect Deployment Guide - Example Discussion on Similar Issue You may also check the relevant issues on GitHub that highlight similar unpacking errors and how they dealt with them. Specifically, ensure your identifiers and configurations strictly adhere to the setup requirements implied by Prefect. Let me know if you need any more assistance or if there are specific parts of your configuration you'd like me to help you verify.
j
@Marvin Here is my
prefect.yaml
file
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name: servicenow-data-loader
prefect-version: 2.19.4

build: null
push: null
pull: null

deployments:
- name: local-dev-jp
  description: JP's local development environment
  schedule: null
  entrypoint: app/flow.py:sn_data_loader
  parameters:
    src_env: prod
    dest_env: bi
    is_incremental: true
  work_pool:
    name: jp-local-dev-pool
    work_queue_name: jp-local-dev-queue
entrypoint seems to follow the correct formate
m
Your
prefect.yaml
configuration seems correct at first glance. The entrypoint follows the required format (
app/flow.py:sn_data_loader
). However, parsing issues could stem from how the command interprets your
yaml
file's configurations. ### Potential Areas to Check 1. YAML Formatting: Ensure no invisible characters or formatting issues exist in your YAML file. Sometimes extra whitespace or invisible control characters can cause parsing errors. 2. Entrypoint Verification: Verify that
app/flow.py
indeed contains the function
sn_data_loader
. 3. Prefect Version: Ensure that the version of Prefect you're targeting is compatible with your deployment configuration and that there are no bugs in that specific version related to deployment. ### Debugging Steps 1. Double-Check the Entrypoint: - Confirm the file path and function name are accurate.
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bash
   $ ls app/flow.py
   $ grep 'def sn_data_loader' app/flow.py
2. Run the Flow Manually: Before deployment, manually run the flow function to ensure there are no issues.
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python
   from app.flow import sn_data_loader
   sn_data_loader()
3. Validate Prefect YAML: - Use an online YAML validator to ensure it has no structural issues. 4. Update Prefect CLI: - Make sure you're using the latest Prefect CLI:
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bash
   $ pip install prefect --upgrade
### Example Deployment Execution Ensure you are in the correct directory where
prefect.yaml
is located and try running the deploy command setting the entrypoint manually.
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bash
prefect deploy -n local-dev-jp --entrypoint app/flow.py:sn_data_loader
If the issue persists, you may want to consult more specific logs or try to deploy to the directory manually while changing the entrypoint configurations to capture exact error messages. Let me know if any of these steps help or if there's another part of your setup you'd like me to examine.