Thank you all you guys for solving issue (graphicsmagick related) with Epson L365 scanner:
https://dev.solus-project.com/T4899
My Solus is now fully updated and my Epson L365 scanner finally works correctly, but there's another new little problem: when I launch utsushi, it says that no device is connected. So I must restart my machine (with scanner turned on and connected via usb), and only after that utsushi see my scanner and works fine.