"All things are visible because they are knowable." Which fallacy is committed according to the classical Indian school of logic (Nyaya)?

The mark "knowable" applies to every possible thing, leaving no example outside the subject.

Here "all things" is the subject, so the class is completely universal.

A valid inference needs a supporting instance (sapaksha) drawn from elsewhere.

When the subject includes everything, no such external example can be found.

The middle term is thus non-conclusive because nothing lies beyond its scope.

This all-inclusive, exampleless defect is the fallacy called anupasamhari.