Fwd() moves gopigo Backwards

Although the motor(s) wiring is according to DEXTER schematics the fwd() command moves the Gopigo Backwards. Any Ideas why? Any Solutions?

Motors wiring images

First double and triple check that it’s correct. If it is then there are either two possibilities.
A: The instructions are wrong.
SOLUTION: Switch the wires on each motor.

B: The gopigo library is wrong.
SOLUTION: The library needs fixing.