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C:\Users\mahdi\Documents\Arduino\libraries\LiquidCrystal_I2C-master\src\LiquidCrystal_I2C.cpp: In member function 'void LiquidCrystal_I2C::init_priv()':
C:\Users\mahdi\Documents\Arduino\libraries\LiquidCrystal_I2C-master\src\LiquidCrystal_I2C.cpp:35:2: error: 'Wire' was not declared in this scope
Wire.begin();
^~~~
C:\Users\mahdi\Documents\Arduino\libraries\LiquidCrystal_I2C-master\src\LiquidCrystal_I2C.cpp: In member function 'void LiquidCrystal_I2C::expanderWrite(uint8_t)':
C:\Users\mahdi\Documents\Arduino\libraries\LiquidCrystal_I2C-master\src\LiquidCrystal_I2C.cpp:249:2: error: 'Wire' was not declared in this scope
Wire.beginTransmission(_Addr);
^~~~
exit status 1
Error compiling for board Arduino Nano.

i get this error on out done every think exactly like you said , what should i do ?

Just got this working, found the display freezes if i press the button,
sometimes it works and changes the screen, but most of the time it freezes the display

I am using an arduino leonardo cause i don't have a nano or uno spare