[BUG] Undefined presets when setting up decomp.me

[1superchip]

Describe the bug
When setting up decomp.me locally, I have run into runtime errors related to presets being undefined for platforms.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
There should be no errors of presets being undefined when setting decomp.me up locally.

Screenshots

Scratches
None.

Desktop (please complete the following information if applicable):

• OS: Windows/WSL
• Browser: Edge

Smartphone (please complete the following information if applicable):
N/A

Additional context

[ethteck]

It's platforms[platform] that's undefined here. Could you print platforms and platform and share the values?

[mkst]

This happens when the localStorage has a platform that is not available.