`The divisor must be a number.` false-positive

[boris-petrov]

  --aspect: calc(var(--bs-aspect-ratio) / 100);
  --max-height: 70vh;
  --max-width: min(100%, calc(var(--max-height) / var(--aspect)));

This code (the third line) leads to: CSS: “--max-width”: The divisor must be a number.

Note that this comes from the latest round of changes in css-validator (from the last few days). Before that there was again an error on the same line albeit a different one: CSS: “--max-width”: Invalid type: “100%, calc(var(--max-height) / var(--aspect))”..