No "Source" box

[Random OBS User]

I cant seem to find my source box, it randomly got removed when my pc shutdown due to a power trip. How do I get it back?

 

[Suslik V]

Main menu > Docks > Reset UI
Edit: or Main menu > View > Docks > Reset UI (depending on version of the application)

 

[Random OBS User]

Wow, thanks bro