Uncaught TypeError: Cannot read properties of undefined (reading 'borderColor') in block-editor.min.js on WordPress 7.0

[dhayalkumarp]

After updating to WordPress 7.0, the block editor shows a blank white page with this error:

Uncaught TypeError: Cannot read properties of undefined (reading 'borderColor') at AIe (block-editor.min.js:178:89975)

Theme: Blockify
WordPress Version: 7.0
PHP Version: (check yours in Site Health)

The error occurs when WordPress 7.0 tries to read borderColor from a color palette item that doesn't have it defined. This breaks the block editor completely showing a blank white page.

Steps to reproduce:

1. Install Blockify theme
2. Update to WordPress 7.0
3. Go to Posts → Add New
4. Editor shows blank white page with borderColor error