How to fix missing panel in Ubuntu Studio 19.10?

The top panel in Ubuntu studio vanished from my system. I have tried several suggested methods to restore it, but none have worked.

Today, I reinstalled the OS, but the panel is still gone. When I try to restore it with:

xfce4-panel -r

or open panel settings, I get an error message saying they failed and:

GDBus.error:org.freedesktop.DBus.Error.ServiceUnknown:
The name org.xfce.Panel was not provided by any .service files

I was getting that error both before and after reinstalling Ubuntu Studio.

Does anyone know how to solve this?

try running xfce4-panel once on the terminal. Works for me. I don't even know why that happened to me at one time. Probably needs to be launched again because it suddenly crashed, and it didn't have a way on restarting the program.