Hi,So, having finished the build, I think, of my Sapphire Plus, but not having any operating instructions, I decided to just plug it in to see what would happen. Turned on the power, immediately got a single beep, and when the screen list up, it has a small message at the top "Err2". I was able to navigate a little within the screens, and was able to find out that the firmware is Robin_nano35, V2.0.1. Any ideas on where to look to find some documentation on this?I'm also having a problem feeding filament, but one thing at a time. :-)Thanks for any guidance you might be able to provide.Ron