Cannot load anything from library
This was a problem with using your OneDrive folder.

duskwuff wrote:


  This is a known incompatibility between the Arduino IDE and Microsoft OneDrive. A fix should be available soon; in the meantime, move your Arduino sketches out of the OneDrive folder.


The issue with OneDrive folders has been resolved as of version 1.8.6.

https://www.arduino.cc/en/Main/ReleaseNotes


  ARDUINO 1.8.6 2018.08.23  
  
  [ide]  
  
  
  Updated arduino-builder to 1.4.0:  
  
  
  parallel build (improve compile speed)  
  better reuse of already compiled files  
  Windows: fixed build for sketch stored under OneDrive cloud folders
  
  


Simply update to a newer version of the Arduino IDE and you will be able to compile and upload your sketch.