X2D filament buffer green blinking LED

I can’t find documentation for this blinking green LED. Does anyone know what it means? I was having some trouble loading filament via AMS2 pro and external spool. I took the filament buffer out and removed a 1cm piece of filament blocking the path. The green blinking LED persists. I cannot upload a video but it just is like the picture but blinking. When loading filament I hear a strange grinding noise. Can someone point me in the correct direction? Thank you.