Element crash on room v11

[Dryusdan]

Steps to reproduce

1. Where are you starting? What can you see? I launch Element application and start on main screen witch list all channel
2. What do you click? I click on channel upgrade to matrix v11 room and crash

Outcome

What did you expect?

Access on channel

What happened instead?

The application crash

Your phone model

Iphone 13 / Iphone XS

Operating system version

16.6

Application version

Element 1.10.14

Homeserver

matrix.dryusdan.fr (synapse)

Will you send logs?

Yes

[pixlwave]

The crash is due to the m.room.create event missing the required creator property.

This appears to be an issue with the backend from what I can tell. I've opened an issue on Synapse to confirm: matrix-org/synapse#16050

[pixlwave]

From the Synapse issue:

matrix-org/matrix-spec-proposals#3820 no longer has a creator property, see matrix-org/matrix-spec-proposals#2175.

creator should be treated as optional now and fall back to the event's sender.