Too many errors compiling Aurora sketch

Hey Louis, I have just had a quick play, its still not compiling for me, errors as follows :

Arduino: 1.8.12 (Windows 10), TD: 1.53, Board: “Teensy 3.5, Serial, 120 MHz, Faster, US English”

                 ^

In file included from C:\Users\Mannys\Desktop\aurora-sm3.1-teensy3.6-64x64\Aurora\Aurora.ino:74:0:

C:\Users\Mannys\Documents\Arduino\libraries\aJson-master/aJSON.h:92:6: error: conflicting return type specified for ‘virtual int aJsonStream::flush()’

int flush();

  ^

In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy3/Stream.h:24:0,

             from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy3/HardwareSerial.h:252,

             from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy3/WProgram.h:46,

             from C:\Users\Mannys\AppData\Local\Temp\arduino_build_69846\pch\Arduino.h:6:

C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy3/Print.h:62:15: error: overriding ‘virtual void Print::flush()’

virtual void flush() { }

           ^

Multiple libraries were found for “SD.h”
Used: C:\Users\Mannys\Documents\Arduino\libraries\SD
Not used: C:\Program Files (x86)\Arduino\libraries\SD
Not used: C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\SD
Multiple libraries were found for “GifDecoder.h”
Used: C:\Users\Mannys\Documents\Arduino\libraries\GifDecoder
Not used: C:\Users\Mannys\Documents\Arduino\libraries\AnimatedGIFs
Error compiling for board Teensy 3.5.

I have tried a different version of the ajson library, the other version gives me lots of other errors. thanks for the hard work your putting in here… it highly appreciated i do need to do some more learning when it comes the the teensy…