DroidCam error while loading shared libraries

I have installed Droidcam On Xubuntu 20.04 LTS with this great tutorial.

After running Droidcam in terminal, I came across this error:

error while loading shared libraries: libappindicator3.so.1: cannot open shared object file: No such file or directory

So I searched libappindicator:

sudo apt search libappindicator

I just picked the most recent version and the error is gone:

sudo apt search libappindicator3-1

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