https://sr.wikipedia.org/wiki/%D0%9C%D0%BE%D0%B4%D1%83%D0%BB:No_globals/%D0%B4%D0%BE%D0%BA has the wrong content model ("Scribunto") instead of "wikitext".
But using Special:ChangeContentModel doesn't seem to be able to fix it either, it errors with "No changes were requested.".
The page is also non-editable. The error message seems self-contradicting:
You cannot edit this revision because its content model is wikitext, which differs from the current content model of the page Scribunto.
The problem is probably that the page_content_model field does not agree with the content model in the revision table.
My guess is that someone who has editcontentmodel access on the wiki might be able to fix this by trying to make an edit through the API with an explicit content model parameter of wikitext. At one point that worked, although later refactoring may have broken it.
Yes.
I ran a script and found 152 pages in module namespace having the same issue, with majority being on srwiki (I only checked module namespace and SUL wikis):
elwiktionary: Kleida/τεκμηρίωση elwiktionary: Table-el-1/τεκμηρίωση elwiktionary: eo-infl/τεκμηρίωση euwiki: Cycling_race/doc hywiktionary: h3/data hywiktionary: lang/data iowiki: Anchor/doc iowiki: Arguments/doc iowiki: Category_handler/doc iowiki: Documentation/config/doc iowiki: Documentation/doc iowiki: Hatnote/doc iowiki: List/doc iowiki: Lua_banner/doc iowiki: Namespace_detect/config/doc iowiki: Namespace_detect/data/doc iowiki: Namespace_detect/doc iowiki: Navbar/doc iowiki: Navbox/doc iowiki: No_globals/doc iowiki: Parameter_names_example/doc iowiki: Sidebar/doc iowiki: TableTools/doc iowiki: Yesno/doc ocwiki: Wikidata/doc pnbwiki: Portal/images/دیگر pnbwiki: Portal/images/عرفیت pnbwiki: Portal/images_٢ pswiki: Convert/data/doc pswiki: Convert/doc pswiki: Documentation/doc pswiki: Infobox_military_conflict/doc pswiki: Location_map/doc pswiki: Location_map/info/doc pswiki: Message_box/configuration/doc pswiki: Ns_has_subpages/doc pswiki: Numeral_converter/doc pswiki: Wikidata/تتبع/doc pswiki: Wikidata2/P54/doc pswiki: WikidataListe/doc sdwiki: Color_contrastT186943 sewiki: Reply_to/doc sewiki: Wd/doc srwiki: Age/док srwiki: Asbox/док srwiki: Asbox_stubtree/док srwiki: Bananas/док srwiki: BananasArgs/док srwiki: Category_handler/config/док srwiki: Category_handler/док srwiki: Check_for_unknown_parameters/док srwiki: Citation/CS1/COinS/sandbox/док srwiki: Citation/CS1/COinS/док srwiki: Citation/CS1/Configuration/sandbox/док srwiki: Citation/CS1/Configuration/док srwiki: Citation/CS1/Date_validation/sandbox/док srwiki: Citation/CS1/Date_validation/док srwiki: Citation/CS1/Identifiers/sandbox/док srwiki: Citation/CS1/Identifiers/док srwiki: Citation/CS1/Suggestions/sandbox/док srwiki: Citation/CS1/Suggestions/док srwiki: Citation/CS1/Utilities/sandbox/док srwiki: Citation/CS1/Utilities/док srwiki: Citation/CS1/Whitelist/sandbox/док srwiki: Citation/CS1/Whitelist/док srwiki: Citation/CS1/sandbox/док srwiki: Convert/data/sandbox/док srwiki: Convert/data/док srwiki: Convert/documentation/conversion_data/док srwiki: Convert/documentation/conversion_data_introduction/док srwiki: Convert/extra/sandbox/док srwiki: Convert/extra/док srwiki: Convert/makeunits/док srwiki: Convert/sandbox/док srwiki: Convert/show/док srwiki: Convert/tester/док srwiki: Convert/text/sandbox/док srwiki: Convert/text/док srwiki: Convert/док srwiki: ConvertNumeric/док srwiki: Date/док srwiki: Delink/док srwiki: Demo/док srwiki: Details/док srwiki: Documentation/config/док srwiki: Effective_protection_expiry/док srwiki: Effective_protection_level/док srwiki: Further-lat/док srwiki: Gaps/док srwiki: Hatnote-inline/док srwiki: Hatnote/док srwiki: HelloWorld/док srwiki: Icon/data/док srwiki: Icon/док srwiki: If_empty/док srwiki: In5/док srwiki: Indent/док srwiki: Infobox/док srwiki: InfoboxImage/док srwiki: List/док srwiki: Location_map/data/Canada/док srwiki: Location_map/data/док srwiki: Lua_banner/док srwiki: Main-lat/док srwiki: Main/док srwiki: Message_box/configuration/док srwiki: Message_box/док srwiki: Middleclass/док srwiki: Namespace_detect/док srwiki: Navbar/док srwiki: No_globals/док srwiki: NumberSpell/док srwiki: Official_website-lat/док srwiki: Official_website/док srwiki: Pagelist/док srwiki: Protection_banner/config/док srwiki: Purge/док srwiki: Random/док srwiki: Redirect/док srwiki: Redirect_hatnote-lat/док srwiki: Redirect_hatnote/док srwiki: ScribuntoUnit/sandbox/док srwiki: ScribuntoUnit/док srwiki: Section_link/док srwiki: See_also-lat/док srwiki: See_also/док srwiki: Separated_entries/док srwiki: SportsReference/док srwiki: String/док srwiki: StringReplace/док srwiki: StripToNumbers/док srwiki: Su/док srwiki: TableTools/док srwiki: TimeAgo/док srwiki: UnitTests/док srwiki: Unsubst/док srwiki: Video_game_reviews/data/док srwiki: Video_game_reviews/док srwiki: WeatherBox/sandbox/док srwiki: Wikidata/date/док srwiki: Wikidata/док srwiki: WikidataCheck/док srwiki: Yesno/док srwiki: Пречица/док srwiki: Пронађи_изворе/autodoc/config/док srwiki: Пронађи_изворе/autodoc/док srwiki: Пронађи_изворе/док thwiktionary: zh/data/Jyutping_word/documentation thwiktionary: zh/data/dial-pron/documentation thwiktionary: zh/data/ltc-pron/documentation thwiktionary: zh/data/och-pron-ZS/documentation zhwiki: Awk
I wonder why page_content_model was wrongly set though. Is this the same issue as T108663#1741046? :/ If so, might be worth resurrecting a modified version of https://phabricator.wikimedia.org/source/mediawiki/browse/REL1_43/maintenance/fixDefaultJsonContentPages.php;848a9f279f42ed0edb0c83bde65254585bc829cb but for Scribunto.
Trying to edit https://te.wikipedia.org/wiki/%E0%B0%AE%E0%B1%82%E0%B0%B8:Message_box gives "Scribunto module" content is not allowed on page మూస:Message box in slot "Main" which feels related but might be a distinct issue?
That's unrelated. That page is in template namespace, not module namespace. That shouldn't be possible.
My guess as to how it ended up in that state is that someone imported a template and its dependencies with "import to namespace" selected as "Template", and the import code in 2015 didn't check for content model mismatches.