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Maniphest T431208

Z500 thrown with "cannot read property 'Symbol.iterator' of undefined"
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Description

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

What happens?:
A Z500 is thrown with this information: "cannot read property 'Symbol.iterator' of undefined".

What should have happened instead?:

A table like the one seen here should have been rendered as Z37347 and Z37341 have nearly identical code with the only difference being that the functions look for representation strings in different language variants: https://www.wikifunctions.org/view/en/Z37337?call=%7B%22Z1K1%22%3A%22Z7%22%2C%22Z7K1%22%3A%22Z37337%22%2C%22Z37337K1%22%3A%7B%22Z1K1%22%3A%22Z7%22%2C%22Z7K1%22%3A%22Z6825%22%2C%22Z6825K1%22%3A%7B%22Z1K1%22%3A%22Z6095%22%2C%22Z6095K1%22%3A%22L406391%22%7D%7D%2C%22Z37337K2%22%3A%22Z1002%22%7D

Details

Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
wikifunctions: Upgrade orchestrator from 2026-07-07-185549 to 2026-07-14-211423Jforresteroperations/deployment-chartsmaster+1 -1
wikifunctions: Upgrade evaluators from 2026-06-30-213833 to 2026-07-08-113600Jforresteroperations/deployment-chartsmaster+2 -2
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Related Changes in GitLab:
TitleReferenceAuthorSource BranchDest Branch
executor.js: Wrap native user-code errors as Z507, matching Pythonrepos/abstract-wiki/wikifunctions/function-evaluator!601jforresterjs-native-error-z507main
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Event Timeline

Redmin created this task.Jul 5 2026, 7:07 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJul 5 2026, 7:07 PM
Redmin added a project: Abstract Wikipedia team.Jul 5 2026, 7:08 PM
Jdforrester-WMF mentioned this in T422052: Error: cannot read property 'Symbol.iterator' of undefined.Jul 6 2026, 3:02 PM
Jdforrester-WMF subscribed.Jul 6 2026, 3:33 PM

I've fixed Z37347, as can now be seen in your example and so also English or German.

I'll work on making the error in this case less confusing!

CodeReviewBot added a comment.Jul 6 2026, 3:43 PM

jforrester updated https://gitlab.wikimedia.org/repos/abstract-wiki/wikifunctions/function-evaluator/-/merge_requests/601

executor.js: Wrap native user-code errors as Z507, matching Python

CodeReviewBot added a project: Patch-For-Review.Jul 6 2026, 4:39 PM

jforrester opened https://gitlab.wikimedia.org/repos/abstract-wiki/wikifunctions/function-orchestrator/-/merge_requests/736

WFFunction: Guard non-built-in arguments against their declared type

CodeReviewBot added a comment.Jul 6 2026, 5:22 PM

jforrester merged https://gitlab.wikimedia.org/repos/abstract-wiki/wikifunctions/function-evaluator/-/merge_requests/601

executor.js: Wrap native user-code errors as Z507, matching Python

Jdforrester-WMF mentioned this in rMSFE684947281ed0: executor.js: Wrap native user-code errors as Z507, matching Python.Jul 6 2026, 5:23 PM
gerritbot added a comment.Jul 8 2026, 1:57 PM

Change #1308647 had a related patch set uploaded (by Jforrester; author: Jforrester):

[operations/deployment-charts@master] wikifunctions: Upgrade evaluators from 2026-06-30-213833 to 2026-07-08-113600

https://gerrit.wikimedia.org/r/1308647

gerritbot added a comment.Jul 8 2026, 2:12 PM

Change #1308647 merged by jenkins-bot:

[operations/deployment-charts@master] wikifunctions: Upgrade evaluators from 2026-06-30-213833 to 2026-07-08-113600

https://gerrit.wikimedia.org/r/1308647

CodeReviewBot added a comment.Jul 9 2026, 11:54 AM

jforrester merged https://gitlab.wikimedia.org/repos/abstract-wiki/wikifunctions/function-orchestrator/-/merge_requests/736

WFFunction: Guard non-built-in arguments against their declared type

Jdforrester-WMF changed the task status from Open to In Progress.Jul 9 2026, 12:13 PM
Jdforrester-WMF claimed this task.
Jdforrester-WMF triaged this task as Medium priority.
Jdforrester-WMF edited projects, added: Abstract Wikipedia team (27Q1 (Jul–Sep)), Essential-Work; removed: Abstract Wikipedia team.
Jdforrester-WMF moved this task from Incoming to Ready to deploy on the Abstract Wikipedia team (27Q1 (Jul–Sep)) board.
gerritbot added a comment.Jul 15 2026, 1:55 PM

Change #1311056 had a related patch set uploaded (by Jforrester; author: Jforrester):

[operations/deployment-charts@master] wikifunctions: Upgrade orchestrator from 2026-07-07-185549 to 2026-07-14-211423

https://gerrit.wikimedia.org/r/1311056

gerritbot added a comment.Jul 15 2026, 2:14 PM

Change #1311056 merged by jenkins-bot:

[operations/deployment-charts@master] wikifunctions: Upgrade orchestrator from 2026-07-07-185549 to 2026-07-14-211423

https://gerrit.wikimedia.org/r/1311056

Jdforrester-WMF closed this task as Resolved.Jul 15 2026, 2:30 PM
Jdforrester-WMF moved this task from Ready to deploy to Needs Sign-off on the Abstract Wikipedia team (27Q1 (Jul–Sep)) board.
Redmin awarded a token.Jul 15 2026, 4:28 PM
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