Flashing RAMBo Board: Multiple libraries were found for "LiquidCrystal.h" Used: C:\Program  

Flashing RAMBo Board: Multiple libraries were found for "LiquidCrystal.h" Used: C:\Program

So I have a Prusa MK2S and I needed to replace the RAMBo board, i bought one from Aliexpress and it came without any firmware.
No biggie I thought, I found this guide here: https://manual.prusa3d.com/Guide/5.+Update+RAMBo+mini+firmware/64

I followed it with some success. Except when I tried to flash the board I got the following error: compiler error using typedef-name 'fpos_t' after 'struct'

So to the internett I went and found the following advice, downgrade to AVR Boards version 1.6.11, and it worked. But now I get the error message: Multiple libraries were found for "LiquidCrystal.h" Used: C:\Program

To my understanding the issue now is that it's looking for the library in the wrong place or I have to many libraries... I don't know I'm tired and cognitive functions are geting a bit muddled.

Does anyone have any advice?