Help with combing code ! - Uni Project

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3 
Arduino: 1.6.8 (Windows 10), Board: "Arduino/Genuino Uno"

sketch\Turn_on_display_with_voice.ino.cpp.o: In function `error(unsigned char)':

C:\Users\Jordanham1994\Desktop\Arduino\my attempts\Turn_on_display_with_voice/Turn_on_display_with_voice.ino:183: undefined reference to `Terminal'

C:\Users\Jordanham1994\Desktop\Arduino\my attempts\Turn_on_display_with_voice/Turn_on_display_with_voice.ino:183: undefined reference to `Terminal'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino/Genuino Uno.

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