@Marvin why is the prefect cli not reading my prefect.yaml file correctly

The issue you're encountering with Prefect version 2.14.21 during flow deployment seems to be caused by the

typer

package update to version 0.10.0. Here's a brief explanation: - In

typer

version 0.10.0, the default behavior changed, leading to certain options being set to

None

instead of an empty list if not explicitly provided. - When

typer

assigns

None

to an option that is expected to be a list, it results in a

TypeError: ‘NoneType’ object is not iterable

error. You can address this by pinning the

typer

package to a version below 0.10.0 in your

requirements.txt

or

pyproject.toml

file. For more details, you can check the related GitHub issue here: new `typer` seems to break our CLI.

Here are a few potential reasons why the Prefect CLI might not be reading your

prefect.yaml

file correctly: 1. Incorrect File Location or Name: The Prefect CLI command must be run from the project root, and paths inside

prefect.yaml

must be relative to the project root. The

prefect.yaml

file can be located in a different directory or named differently if you use the

--prefect-file

option. Example:

prefect deploy --prefect-file ../prefect2.yaml --all

2. File Parsing and Structure: Make sure that your

prefect.yaml

file is correctly structured and formatted. Sometimes, minor issues in the YAML file can lead to it not being read properly. 3. Overriding Options: Any configuration in

prefect.yaml

can be overridden by options provided in the

prefect deploy

command. Ensure there are no conflicts between your CLI options and what you have in the YAML file. 4. Prefect Version: Ensure you are using a Prefect version that supports the features of

prefect.yaml

. For more details, see: - Prefect deployment guide: Prefect Deployment Guide - Related GitHub issue on custom `prefect.yaml`: GitHub PR #11511 If these suggestions do not resolve your problem, please share specific details about what seems to be missed or not parsed correctly, and I can provide further assistance.

The error you encountered is caused by the

typer

package. Specifically, the update to

typer

version 0.10.0 introduced changes that can result in options being set to

None

instead of an empty list if not explicitly provided. This leads to the

TypeError: ‘NoneType’ object is not iterable

error when you run the

prefect deploy

CLI command. To resolve this, you should pin the

typer

package to a version below 0.10.0. You can do this by adding or updating the

typer

dependency in your

requirements.txt

or

pyproject.toml

file. Relevant GitHub issue: new `typer` seems to break our CLI.