YouTube made another change that cased this. There is a fix in 2.1.8, which is out on the other browsers, but still under review on Firefox (Firefox usually takes longer). You can install the beta while waiting if you would like (Just click "FirefoxSignedInstaller.xpi", and make sure to disable your other version for now) https://github.com/ajayyy/DeArrow/releases/tag/2.1.8
