exporting archiving collaboration sessions do not work

[nolith]

Describe the bug
When I start a collaboration session, there is no way to save my diagrams, both "archive" and "export" function are not working.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Collaboration'
2. Click on 'Create a new room' and fill the prompt
3. Edit your drawing
4. click the export icon on the top right
5. see the error "the data couldn't be read because it's missing"

Desktop (please complete the following information):

• OS: macOS
• Version(Build): 26.2

Additional context

• Installation source: downloaded directly with homebrew
• Are you logged into an iCloud account?: Yes but I disabled iCould sync from the excalidrawz settings

Screenshots
If applicable, add screenshots to help explain your problem.

[nolith]

This is reproducible with the archive feature as well, it will show the "Archive room" selector and once you select a folder and click "Save" it will show up the same error and the "Archive room" window will not disappear