My Twitch stream is always offline?

Hello, every time I start my stream, Twitch shows it in my profile, but when I click on it, it just shows a black screen and says "Offline" (but you can hear the audio). After I end the stream, however, I can upload a perfectly good video of the stream. I think this problem has existed since I switched to Streamlabs, since my test streams with OBS worked fine.

This is what it looks like when you access the stream. (Screenshot from a friend)

I hope someone can tell me how to solve this