HELP ME, PLEASE. compilation terminated

Hi I have two problems as far as my arduino project is concerned, it doesn't find me #include "compiler.h"

And what's more I find more libraries?

ERROR CODE:

More than one library found for "WDTZero.h"
Used: /home/software/Scrivania/arduino/arduino-1.8.10-linux64/arduino-1.8.10/libraries/WDTZero_master
More than one library found for "Adafruit_ZeroTimer.h"
Used: /home/software/Scrivania/arduino/arduino-1.8.10-linux64/arduino-1.8.10/libraries/Adafruit_ZeroTimer-master
In file included from /home/software/Scrivania/arduino/arduino-1.8.10-linux64/arduino-1.8.10/libraries/Adafruit_ZeroTimer-master/Adafruit_ZeroTimer.h:11:0,
                 from sketch / Adafruit_ZeroTimer.cpp: 1:
/home/software/Scrivania/arduino/arduino-1.8.10-linux64/arduino-1.8.10/libraries/Adafruit_ZeroTimer-master/utility/tc.h:458:10: fatal error: compiler.h: No such file or directory
 #include "compiler.h"
          ^ ~~~~~~~~~~~
compilation terminated.
exit status 1
Error during compilation for the Arduino Zero (Programming Port) card.

Do you think that it might help if you posted the code that produces the error ?

Just comment this line out or remove it.

There is nothing wrong with double libraries - that is a linker pecularity.
The compiler is missing "compiler. h" that you have includet!

Not sure if this will help but the first thing I do is the compiler cannot find some resource is see if I can find it.

I believe this is a good exercise as you will learn where files are located and how to troubleshoot in the future.

There are three locations that I know of where you should look: (if a windows installation)

C:\documents/arduino
C:\Program Files (x86)\Arduino

and
C:\Users<your user name here>\AppData\Local\Arduino15

This is a hidden directory so you will have to tell windows explorer to show hidden files directories.

John