Python: There is no valid metadata for the outgoing connection 1.

[wee]

Hi all,

I'm trying to implement stemming via Python in Alteryx. However, even when there is a "Success: writing outgoing connection data 1" message in Python, there are no data shown in the outgoing anchor. 

This is the error that I encountered. 

I saw these posts.

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Error-in-Python-Write-No-Valid-Metadat...

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Python-Tool-Issues-with-Output/td-p/35...

However, by reverting my designer layout does not solve my issue. 

Please help. Have attached the workflow for reference. 

Thanks and regards,

W

[AndrewKramer]

Have you tried re-running the workflow? This error typically goes away after re running. After running the workflow, can you see output in the #1 anchor?

[wee]

Hi, I did rerun it. However, the issue persists. Tried closing and opening Alteryx as well.

[AndrewKramer]

Hi,

Can you confirm you tried the following:

Options > User Settings > Restore Defaults.

Can close designer and re-open and send me the following screenshots of your program:

1) Picture of Canvas before execution

2) Picture of Canvas after execution (without clicking on anything)

Thanks,

Andrew

[wee]

Hi @AndrewKramer,

Thanks for the respond. Have reverted the view to default. 

Before execution:

After execution:

Result tab after execution:

These are the licenses activated in my local designer. Not too sure if it would affect the Python tools?

Thanks and regards,

W

[AndrewKramer]

Thanks for sending over this information. In this case, after execution of the workflow, the "No valid metadata" error went away, and is actually unrelated to the actual error of no data showing up in the output anchor (even though the Jupyter Notebook says data was written to anchor #1).

Typically, I have seen this error come from updating from older versions of Alteryx to a newer one that has the Jupyter functionality (2018.3 or 2018.4). Typically the fix is to reset the settings, which you tried in this case. 

I believe further investigation is necessary to determine the root cause. Can you email Alteryx Customer Support (Support@alteryx.com) and reference this thread?

Thanks,

Andrew

[Verakso]

Hi @AndrewKramer 

I am having the same problem as @wee and I tried the same suggestions.

After I had reset my user settings I opened the workflow again (The Tool Master | Python example)

This is how it looks when I open itBefore

Then after I have run the workflow, the error goes away

After Run

But if I touch the Python tool, the error comes back

When I click on the Python tool

It seems rather cosmetically, but it gives some disturbance to get an error, especially if it is not there.

Best Regards
/Thomas

PS. At least I got do to all my setting once more ;)

[AndrewKramer]

Hi Thomas,

The specific "No Valid Metadata" error is more or less cosmetic. The Python Tool works off a cache of your data, allowing you to interactively build your workflow. It is more or less a reminder to re-run your workflow to push the changes made to the data in the Python tool (such as new columns, etc) to your downstream tools. As long as you can see output in the proper anchors when using the Alteryx.write() function you should be good.

Andrew

[wee · Accepted solution]

Hi all,

After speaking to Alteryx support, I did the following to resolve this. 

1. Ensuring the my system setting in my designer are in place (Apparently, my errorlogs and engine logs are not created). You can reset or check you system setiing by going to Option --> Advance Option --> System Settings. 

2. Running on elevated (Administrator) seems to help with the problem as well. 

After these steps, I am able to see the Python in my output anchor. 

Thanks and regards,

Wee

[yixuankang]

Im also facing this cosmetic issue which wouldn't be bothering me normally since the output is ok, but it does not allow me to publish the workflow onto the gallery. So I *really* need a fix for this...