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Maniphest T60310

Flow: PHP Warning: DOMDocument::loadHTML(): Empty string supplied as input in /srv/mediawiki/extensions/Flow/includes/ParsoidUtils.php
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Description

On ee-flow server,
$ sudo tail -f /var/log/apache2/error.log

Load http://ee-flow.wmflabs.org/wiki/Sandbox and press spacebar or drag scrollbar to scroll down (and trigger infinite scrolling) Eventually error.log fills with dozens of these warnings:

[Wed Dec 11 04:42:21 2013] [error] [client 216.38.130.164] PHP Warning: DOMDocument::loadHTML(): Empty string supplied as input in /srv/mediawiki/extensions/Flow/includes/ParsoidUtils.php on line 186, referer: http://ee-flow.wmflabs.org/wiki/Sandbox

The page seems to work OK. This could be related to bug 57897 , though infinite scroll kept working until my browser got really sluggish.

Version: master
Severity: minor

Details

Reference
bz58310

Event Timeline

• bzimport raised the priority of this task from to Needs Triage.Nov 22 2014, 2:41 AM
• bzimport added a project: StructuredDiscussions.
• bzimport set Reference to bz58310.
• bzimport added a subscriber: Unknown Object (MLST).
• Spage created this task.Dec 11 2013, 4:49 AM
• bzimport added a comment.Dec 11 2013, 4:54 AM

bingle-admin wrote:

The WMF core features team tracks this bug on Mingle card https://mingle.corp.wikimedia.org/projects/flow/cards/607, but people from the community are welcome to contribute here and in Gerrit.

• Spage added a comment.Jan 29 2014, 7:50 AM

Maybe gerrit I2d50c837e82 was the patch to review for this bug, Erik Bernhardson comments "it is not impossible to get that error in 58310, depends what was calling ParsoidUtils::DOMDocument"

When I scroll down in ee-flow Talk:Sandbox to around the topic 'Did the "A" go away?', I start getting big chunks of dozens of

HTTP: POST: http://localhost:8000/localhost/Sandbox

messages and this repeats when I next paginate more in. That looks like parsoid requests, presumably these are so old they require parsing from wikitext to HTML. But I scrolled all the way to "Just wanted to see what would happen, 2013-10-16 Wednesday" with no errors in the log, so yeah, fixed.

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