https://translatewiki.net/w/api.php?action=query&format=json&list=messagecollection&mcgroup=mediawiki&mclanguage=fr&mclimit=100&mcfilter=!ignored%7C!optional%7Ctranslated%7C!reviewer%3A15345%7C!last-translator%3A15345&mcprop=definition%7Ctranslation%7Ctags%7Cproperties&rawcontinue=1 times out in the backend

Also I see in the log:

2017-12-04 12:12:21 web1.translatewiki.net translatewiki_net-bw_: [649a48ded59a67c75e43ca71] /w/api.php?action=query&format=json&list=messagecollection&mcgroup=mediawiki&mclanguage=fr&mclimit=100&mcfilter=!ignored%7C!optional%7Ctranslated%7C!reviewer%3A15345%7C!last-translator%3A15345&mcprop=definition%7Ctranslation%7Ctags%7Cproperties&rawcontinue=1   MWException from line 154 of /srv/mediawiki/tags/2017-12-04_10:32:09/extensions/Translate/utils/MessageHandle.php: called before isValid
#0 /srv/mediawiki/tags/2017-12-04_10:32:09/extensions/Translate/api/ApiQueryMessageCollection.php(143): MessageHandle->getGroup()
#1 /srv/mediawiki/tags/2017-12-04_10:32:09/extensions/Translate/api/ApiQueryMessageCollection.php(22): ApiQueryMessageCollection->run()
#2 /srv/mediawiki/tags/2017-12-04_10:32:09/includes/api/ApiQuery.php(253): ApiQueryMessageCollection->execute()
#3 /srv/mediawiki/tags/2017-12-04_10:32:09/includes/api/ApiMain.php(1582): ApiQuery->execute()
#4 /srv/mediawiki/tags/2017-12-04_10:32:09/includes/api/ApiMain.php(544): ApiMain->executeAction()
#5 /srv/mediawiki/tags/2017-12-04_10:32:09/includes/api/ApiMain.php(515): ApiMain->executeActionWithErrorHandling()
#6 /srv/mediawiki/tags/2017-12-04_10:32:09/api.php(94): ApiMain->execute()
#7 {main}

smw-pa-property-predefined__sci_doi has two spaces which mediawiki normalises to one.

Added more than two years ago: https://github.com/SemanticMediaWiki/SemanticCite/blame/master/i18n/en.json

I wonder why they haven't caused troubles before. Filed https://github.com/SemanticMediaWiki/SemanticCite/issues/58

Abit better, excepted for ReRead action; I just retried:

• click on Translate shows 'nothing to translate with redirection button to 'Reread' and panel completed => good

https://translatewiki.net/w/i.php?title=Special:Translate&group=mediawiki&language=fr&filter=%21translated&action=translate

• click on ReRead display EMPTY list ended only with the progression bar => NOK

https://translatewiki.net/w/i.php?title=Special:Translate&group=mediawiki&action=proofread&language=fr&filter=translated%7C%21reviewer%3A15345%7C%21last-translator%3A15345

Upstream is migrating away from two underscores.

Too bad: empty displayed list of reread items when level is only 40%

The fix for Semantic MediaWiki was done with pull 2880.

Still open to be done (2017-12-29):

• Semantic Cite ( issue 58 )
• Semantic Breadcrumb Links ( issue 37 )
• Semantic Extra Special Properties ( issue 96 )
• Semantic Interlanguage Links ( issue 54 )

I believe that T183892 addesses a different issue. I do not know what is going on but I have no issues at all proofreading system messages for the "MediaWiki" group.

Better, feature seems operational back now - Friday 5 Jan 2018 - Paris time: 12:42 AM

Yes. This issue was spamming the log so I already put in place the temporary workaround.

Congratulations all !

Hi How do I login to use this site it shown that I have no permission on this site please kindly let me know so I can use them for translate Meta-Wiki to my language.
Thank you

@Tris_T7-TH: Please ask questions about some site (maybe you mean translatewiki.net?) on that site. This page (a Phabricator task) is about two underscores being converted to one. It is not a general translatewiki.net support forum. Thanks.