TypeError: Cannot read property 'byteLength' of null
Open, Needs TriagePublicPRODUCTION ERROR
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Authored By

	AnneT
	Jun 10 2021, 5:17 PM

Description

Error

normalized_message

TypeError: Cannot read property 'byteLength' of null

exception.trace

at ArrayBufferBackend.onXHRLoad  https://commons.m.wikimedia.org/w/load.php?lang=en&modules=ext.tmh.OgvJs%2COgvJsSupport%2Cvideo-js%2Cvideojs-ogvjs&skin=minerva&version=n0yzk:105:658
at XMLHttpRequest.<anonymous>  https://commons.m.wikimedia.org/w/load.php?lang=en&modules=ext.tmh.OgvJs%2COgvJsSupport%2Cvideo-js%2Cvideojs-ogvjs&skin=minerva&version=n0yzk:9:847

Impact

No user-facing impact observed thus far

Notes

14 occurrences, all since yesterday post-train. May have been caused by switch from WBMI to MediaSearch

Details

Request URL: https://commons.m.wikimedia.org/w/index.php?search=[search term]&title=Special:MediaSearch&type=video

Related Objects

Mentioned In: T248418: Roll out videojs as the only video/audio player on all Wikimedia wikis
Mentioned Here: T265425: Uncaught Error: write cursor too small

Event Timeline

AnneT created this task.Jun 10 2021, 5:17 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJun 10 2021, 5:17 PM

AnneT updated the task description. (Show Details)Jun 10 2021, 5:23 PM

Restricted Application added a subscriber: Masumrezarock100. · View Herald TranscriptJun 10 2021, 5:23 PM

CBogen edited projects, added Structured-Data-Backlog; removed Structured-Data-Backlog (Current Work).Jun 11 2021, 2:10 PM

Krinkle updated the task description. (Show Details)Jun 11 2021, 4:54 PM

Krinkle added a project: TimedMediaHandler.

Krinkle moved this task from Untriaged to Older on the Wikimedia-production-error board.

Appears to be inside the ogv.js library (not the videojs library, nor the MW payload). Note that this is about the native Uint8Array#byteLength field, and not related to our jquery.byteLength plugin.

https://codesearch.wmcloud.org/deployed/?q=byteLength&i=nope&files=&excludeFiles=&repos=mediawiki/extensions/TimedMediaHandler

CBogen edited projects, added Structured-Data-Backlog (Current Work); removed Structured-Data-Backlog.Jun 14 2021, 4:30 PM

CBogen moved this task from Incoming to Ready for Estimation on the Structured-Data-Backlog (Current Work) board.Jun 14 2021, 5:04 PM

CBogen moved this task from Ready for Estimation to Ready for Development on the Structured-Data-Backlog (Current Work) board.Jun 21 2021, 5:02 PM

Seddon moved this task from Ready for Development to Blocked on the Structured-Data-Backlog (Current Work) board.Aug 4 2021, 10:27 AM

Like T265425, this is not a MediaSearch-specific issue; I suspect the problem comes when unsupported mobile devices (old Android phones) try to run the ogv.js transcoding library and fail. Not sure if there's anything we can do about this – mobile video support on Commons has always been somewhat flaky from what I understand. I'm going to remove the MediaSearch tag and suppress this error in our logs for now.

egardner removed a project: Structured-Data-Backlog (Current Work).Aug 18 2021, 10:18 PM

TheDJ moved this task from To sort to OgvJs on the TimedMediaHandler board.Dec 19 2021, 10:13 PM

Umherirrender added a project: JavaScript.Dec 28 2021, 11:07 AM

TheDJ edited projects, added ogv.js; removed TimedMediaHandler.Jan 17 2022, 8:53 PM

Jdlrobson mentioned this in T248418: Roll out videojs as the only video/audio player on all Wikimedia wikis.May 2 2022, 3:59 PM

TypeError: Cannot read property 'byteLength' of nullOpen, Needs TriagePublicPRODUCTION ERRORActions