Thanks for taking the time to report this!

What are exact steps to reproduce the problem? Also, the exact error is welcome (if that arrow in your screenshot can be clicked to expand its content, don't know) by attaching "?debug=true" to the URL.

jeanmarc.fulcrand wrote:

home page error 1

Attached:

jeanmarc.fulcrand wrote:

home page error 2

Attached:

jeanmarc.fulcrand wrote:

Random page

Attached:

jeanmarc.fulcrand wrote:

editing a page

Attached:

jeanmarc.fulcrand wrote:

Hi

Thanx for reply. There is no special step. Each displaying page is producing the problem : homepage (attachements "home page"), profile page, viewing an article (attachement "random page"), editing an article (attachement "editing page"), etc...

I do not have "?debug=true" parameter attached to the URLs when i'm browsing, as you can see on attachments pictures.

If you need something else, let me know.

Please append "?debug=true" to the URL, or "&debug=true" if there already is a question mark "?" in the URL address.
This should provide clearer information in your browser's error console about the actual location in the code where the problem happens.

jeanmarc.fulcrand wrote:

homepage console with debug=true

Attached:

jeanmarc.fulcrand wrote:

random page with debug=true

Attached:

jeanmarc.fulcrand wrote:

edit with debug=true

Attached:

jeanmarc.fulcrand wrote:

Hi, i added pictures of JS console on pages with "debug=true". Hope this will help to find something :) . Thx for helping.
Sacamol

When I go to
https://fr.wikipedia.org/wiki/Wikip%C3%A9dia:Accueil_principal?debug=1
using Firefox in privative navigation the error doesn't happens (so it is not something enabled by default). But If I type
importScript('User:Dr Brains/HistoryDeluxe.js');
in the console (which is one of the scripts you use) I see the error "URIError: malformed URI sequence" from this line
https://github.com/wikimedia/mediawiki-core/blob/555e0b4b3c517cfb565ad275d9600806cd3cd50a/resources/lib/jquery/jquery.cookie.js#L17
At that point the parameter s has this value:
"-Nmdbot%3BABotSupreme%3BAHbot%3BAddihockey10%20%28automated%29%3BAibot%3BAkeronBot%3BAlexbot%3BAlinebot%3BAlirezabot%3BAnalphabot%3BAntonyB-Bot%3BArkbot%3BAutorit%E9Bot%3BAvicBot%3BAvocatoBot%3BBeBot%3BBlockbot%3BBoToulousain%3BBokimBot%3BBot%20de%20paille%3BBotMyShinyMetalAss%3BBoten%20Anna%3BBotte%3BBottine%3BBub%27s%20wikibot%3BCactusBot%3BCarsracBot%3BCeraBot%3BChicobot%3BChobot%3BChuispastonBot%3BCocuBot%3BCommonsDelinker%3BCrochet.david.bot%3BDEagleBot%3BDSisyphBot%3BDarafshBot%3BDickensBot%3BDiliBot%3BDinamik-bot%3BDr%20Bot%3BDragonBot%3BEdwardsBot%3BEleferenBot%3BElfobot%3BEmausBot%3BEpopBot%3BEscarbot%3BEtiennekdBot%3BFBot%3BFajrbot%3BFiriBot%3BGZ-Bot%3BGerakibot%3BGhosterBot%3BGratusBot%3BGrouchoBot%3BHAL%3BHRoestBot%3BHawk-Eye-Bot%3BHerculeBot%3BHexabot%3BHomon-Bot-Ohohoho%3BHunsuBot%3BHyuBoT%3BIluvatarBot%3BInfoRobBot%3BIr4ubot%3BJYBot%3BJackBot%3BJackieBot%3BJustincheng12345-bot%3BKamikazeBot%3BKasirbot%3BKunMilanoRobot%3BKwjbot%3BLait%20ribot%3BLe%20plus%20bot%3BLeperebot%3BLinedBot%3BLin%E91bot%3BLouperibot%3BLoveless%3BLucienBOT%3BLuckas-bot%3BMahdiBot%3BMakecat-bot%3BMediaWiki%20default%3BMediaWiki%20message%20delivery%3BMerlIwBot%3BMerlLinkBot%3BMinsbot%3BMyBot%3BNallimbot%3BOrikriBot%3BOrlodrimBot%3BPastilleBot%3BPeter17-Bot%3BPhe-bot%3BPiglobot%3BRahl43bot%3BRedBot%3BRezabot%3BRibotBOT%3BRoland45-Bot%3BRpabot%3BSahimrobot%3BSalebot%3BSantoshBot%3BSassoBot%3BScoopBot%3BStarusBot%3BSteenthIWbot%3BSynthebot%3BTXiKiBoT%3BTalabot%3BThijs%21bot%3BTjBot%3BTotorobot%3BTuHan-Bot%3BVagobot%3BVarbot%3BVer-bot%3BVolkovBot%3BWikiCleanerBot%3BWwbot%3BXavier%20Combelle%20Bot%3BXqbot%3BYFdyh-bot%3BZebulon84bot%3BZetudBot%3BZiziBot%3BZ%E9roBot%3B%u30BF%u30C1%u30B3%u30DE%20robot"

Looking at that code (your browser's developer console offers that) and going to the line numbers offered, these are all cookie related calls.

jquery.cookie.js:17
jquery.cookie.js:65

ext.dismissableSiteNotice.js:10
ext.dismissableSiteNotice.js:29
   and 
mediawiki.action.view.postEdit.js:24
mediawiki.action.view.postEdit.js:86
   and 
bannerController.js:308
bannerController.js:165

This might simply be a misbehavior created by 'User:Dr Brains/HistoryDeluxe.js'? (thanks Helder for your help to track this down!)

jeanmarc.fulcrand wrote:

Thx for replying. I have disabled the user script "User:Dr Brains/HistoryDeluxe.js" and it seems that the problem disappeared. It's a little bit weird that this is a user script the problem cause because, in the beginning, i disabled all gadgets and user scripts and the problem was still there.

I will tell to the script maintainig user (Dr Brains) that there is problem on it. Sorry for disturbing you with non mediawiki related problem.

Really big thanks for your help :) .

sacamol

https://fr.wikipedia.org/wiki/Utilisateur:Dr_Brains/HistoryDeluxe.js does $stuff with cookies.

Glad that Helder and you found out the reason for this. I'm going to close this ticket as INVALID as the reason seems to be outside of the MediaWiki codebase and instead in code that is locally on-wiki.

If I type $.cookie('bug70097') in the console I get

URIError: malformed URI sequence

so this bug doesn't seems to be caused by that script.

(In reply to Helder from comment #16)

If I type $.cookie('bug70097') in the console I get

URIError: malformed URI sequence

so this bug doesn't seems to be caused by that script.

And the error doesn't happens anymore after I deleted the cookies from fr.wikipedia.org.

jeanmarc.fulcrand wrote:

Since i have disabled the script, the problem hadn't appeared one more time so it might me linked to it. (just in user experience way, not technical way)

Sacamol

No way to reproduce anymore. Closing as WORKSFORME.