Their APIs are documented well and seem to work reliably, TeamSpeaks query is waaay more annoying and lacks some features.
I switched to Discord last year because it's way more userfriendly, has a modern design and their servers are pretty good.
This. :( (basically the only real downside...
These Log messages are irrelevant, they are not errors.
Provide the full log output and all of the other information (output of the diag-script).
(This is the same as asking "Why doesn't my car work?!" and sending the mechanic a blurry, low-resolution image of your car.)
READ ME BEFORE YOU POST
If you can execute youtube dl from within the sinusbot folder you can leave it blank and the bot should automatically find it.
I don't know whether you've installed it but the installer is capable of doing it.