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Error page "Back to Studio" has no href when authoring is not a frontend-base app (regression from #210)

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
react, typescript
Domain
frontend

Research direction

The dead link comes from destination in src/authz-module/components/ErrorPage/index.tsx, which now uses getUrlByRouteRole('org.openedx.frontend.role.courseAuthoring') and gets undefined when authoring is not a frontend-base app. Compare with the pre-#210 version that used getConfig().COURSE_AUTHORING_MICROFRONTEND_URL, then choose between a config fallback and hiding the button when no URL exists. Done when the 404 page shows a working Back to Studio link on a non-frontend-base install, with no anchor lacking href.

Written by the indexing model from the issue text.

Description

The error page's only action, "Back to Studio", does nothing on an install where the authoring MFE isn't part of the frontend-base site. Tutor main is one: authoring still runs as a separate legacy MFE. The button renders as an anchor with no href:

<a class="pgn__hyperlink default-link standalone-link m-2 btn btn-primary" target="_self">Back to Studio</a>

Clicking it leaves the route unchanged, so the reader has to edit the URL to get out of the 404.

Cause: the frontend-base migration (#210, merged via #227 on 2026-09-19) changed src/authz-module/components/ErrorPage/index.tsx from

destination={`${getConfig().COURSE_AUTHORING_MICROFRONTEND_URL}`}

to

destination={getUrlByRouteRole('org.openedx.frontend.role.courseAuthoring') ?? undefined}

getUrlByRouteRole only finds apps registered in the site with that role. When authoring isn't one of them, it returns nothing and the link has no destination. release/verawood renders the same view with a working link.

Expected: fall back to a configured Studio/authoring URL when no app provides the role, or hide the button rather than render a dead one.

Environment: Tutor main (overhangio/openedx-mfe:22.1.0-main), openedx-authz 1.23.0, 2026-09-22; code as on master 2026-10-12. Works on verawood. Found by the Open edX end-to-end test suite (BTR TC-00442).

Dominant language
TypeScript
Stars
1
Forks
13
Avg merge
2d 10h
Merged PRs (30d)
10

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