Soft crash on space panel view (unknown exact cause) - "Something went wrong!" error

[turt2live]

Steps to reproduce

Unsure if this actually reproduces it:

1. Browse a space (mentioned in rageshake)
2. Join some subspaces and rooms
3. Crash

It's possible this is also related to a paginated request completing at the same time as the join.

Outcome

What did you expect?

Not to crash

What happened instead?

2022-07-06T16:21:34.440Z E Caught /sync error Cannot read properties of null (reading 'getJoinedMemberCount')
TypeError: Cannot read properties of null (reading 'getJoinedMemberCount')
    at MatrixClient.updateMetrics (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:24889:37)
    at MatrixClient.emit (vector://vector/webapp/bundles/d54181b85f77a9f74413/vendors~init.js:665:7)
    at MatrixClient.emit (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:30916:18)
    at vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:58936:16
    at async Object.promiseMapSeries (vector://vector/webapp/bundles/d54181b85f77a9f74413/bundle.js:1329:5)
    at async SyncApi.processSyncResponse (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:58848:5)
    at async SyncApi.doSync (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:58510:7)

2022-07-06T16:21:42.955Z E Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node. (NotFoundError | 8)
2022-07-06T16:21:42.960Z E Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node. (NotFoundError | 8)
2022-07-06T16:21:42.960Z E The above error occurred while React was rendering the following components: 
    at div
    at div
    at div
    at AccessibleButton (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:3368:5)
    at li
    at Tile (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:35014:5)
    at HierarchyLevel (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:35343:5)
    at ul
    at RovingTabIndexProvider (vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:26428:5)
    at SpaceHierarchy (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:35565:5)
    at div
    at SpaceLanding (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:35875:5)
    at div
    at MainSplit_MainSplit (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:18948:5)
    at ErrorBoundary (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:63350:5)
    at main
    at SpaceRoomView_SpaceRoomView (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:36266:5)
    at RoomView_RoomView (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:36751:5)
    at vector://vector/webapp/bundles/d54181b85f77a9f74413/init.js:6205:76
    at div
    at div
    at div
    at LoggedInView_LoggedInView (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:39354:5)
    at ErrorBoundary (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:63350:5)
    at MatrixChat (vector://vector/webapp/bundles/d54181b85f77a9f74413/element-web-app.js:849:5)

{"source":"webpack:///matrix-react-sdk/src/stores/RoomViewStore.tsx","line":216,"column":44,"name":"getJoinedMemberCount"}

Operating system

Windows 10

Application version

Nightly

How did you install the app?

The Internet

Homeserver

t2l.io

Will you send logs?

Yes

[Mikaela]

Coming from #22924, it happened again and as it was closed in favour of this one, I sent logs. I think it may be related to mass clicking join at many rooms in a Space?

[Zocker1999NET]

Happens to me as well each time I try to join a room from a space's view, but not when joining sub-spaces. I don't think it comes from mass-joining as I tried to join each room at once without success. Happens to me especially when joining rooms from #community:matrix.org or its sub-spaces.

[t3chguy]

Regressed by matrix-org/matrix-react-sdk@0d100cb