I've seen that there was a post about the problem with Droidcam on Solus. But I want to talk about it again.
First of all, to install this application, I had to edit their installation scripts. Secondly, the program requires v4l2loopback, and to install it for the current kernel, you need to install the v4l2loopback-current package, but it does not help to solve the following error even after rebooting: