Vendor option throws "Uncaught Error: missing: 9"

[Andrew-Cottrell]

Browser: Chrome 80.0.3987.132
OS: Windows 1909

Uncaught Error: missing: 9
    at e (index.js:formatted:3765)
    at Object.n.generateNestedData (index.js:formatted:1149)
    at Object.refresh (index.js:formatted:925)
    at toggleMeltdownSpectre (filter.js:57)
    at filter (filter.js:107)
    at (index):406

Reproduce

1. Open https://transient.fail/
2. Deselect all vendors
3. Select "Intel"

Selecting either "ARM" or "AMD" does not give this error.