Contrast and mode buttons are not working in figma plugin

[foets]

Describe the bug
contrast buttons in plugin are not working and whole page stops responding

To Reproduce
Steps to reproduce the behavior:

1. Go to blank figma file populated only with color theme, open plugin
2. Click on any of 5 buttons (light, dark mode and 3 contrast buttons)
3. See error

Expected behavior
i expected exactly what was written - to see results and not shut down tab in my browser

Desktop (please complete the following information):

• OS: MacOS
• Browser chrome