woff meta data text descriptions seems to be required. But the font info sheet should not fail so hard... also see https://github.com/robotools/defconAppKit/issues/26

Batch supports both flavors inside a woff. It’s up to you to pick one, each of them has benefits and downsides. OTF will be close to the original while a TTF is mostly converted. A TTF flavored one can contain TTF hinting... Good luck