Error in the function call API: for Z29148 (referencing configuration Z16435)
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Authored By

	GrounderUK
	Nov 1 2025, 12:43 PM

Description

Steps to replicate the issue (include links if applicable):

Please see Breton 1 is "unan" (Z29148)
In implementations, click “Details”

What happens?:
Currently fails:

Error type: Error in the function call API
Error data:
propagated error: "Status 503 from wikilambda_fetch (ZIDs <Z22620>)"
Expected result: unan
Actual result: Z24

What should have happened instead?:
The test should pass.

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):

Running the function in “Try this function” produces the expected result. Amending the test case’s input also fails (but this presents as a

At the time of writing, the Russian Cardinal function (Z22620) has no connected implementations, but this should be irrelevant for the Breton language.

I plan to remove Russian from the configuration, because its presence blocks fall through to the default function, for the Russian language.

Reported on Telegram by @VIGNERON

Event Timeline

GrounderUK created this task.Nov 1 2025, 12:43 PM

Jdforrester-WMF triaged this task as Medium priority.Nov 5 2025, 6:39 PM

Jdforrester-WMF moved this task from To Triage to Bugs to investigate on the Abstract Wikipedia team board.

Jdforrester-WMF added a project: function-orchestrator.

99of9 subscribed.Nov 6 2025, 6:18 AM

ecarg changed the task status from Open to In Progress.Nov 15 2025, 6:53 AM

ecarg claimed this task.

DSantamaria subscribed.Nov 19 2025, 4:32 PM

Hello @99of9~ server errors such as this can be expected as it indicates our servers are currently overloaded, hopefully brief! Is this still occurring for you?

Yes I think I saw this occasionally, but I'm not doing much at the moment. In fact, nobody is, so I'm having trouble understanding why the servers would be overloaded! Is there web-crawler activity again?

Good call! We've been keeping an eye on this through our logging and monitoring lately especially as we're focused on our system load and memory usage. Generally, 503s can happen occasionally even when traffic is low; our server may have been briefly unable to handle the requests at that particular moment. This can happen during small internal delays, pod restarts, or brief network hiccups. We don't wish to see this trending upward however, so thank you for raising this!

Hey @99of9 , trying to reproduce it and not seeing it after a couple of tries on different days. Is this still failing on your side?

I also can't reproduce the original bug report. @VIGNERON?

I’ve removed Russian from the configuration. If the occasional failures in wikilambda_fetch are logged, I think this can be closed.

In T408969#11471994, @GrounderUK wrote:

I’ve removed Russian from the configuration. If the occasional failures in wikilambda_fetch are logged, I think this can be closed.

Doing so.

Error in the function call API: for Z29148 (referencing configuration Z16435)Closed, InvalidPublicBUG REPORTActions

Description

Event Timeline

Error in the function call API: for Z29148 (referencing configuration Z16435)
Closed, InvalidPublicBUG REPORT
Actions