So what is the solution? I have a same case like this. I'm using I2C backpack for LCD 20x4. I've tried FM library but this happened.
"LCD_Tutorial:5:53: error: 'POSITIVE' was not declared in this scope
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);"
Any suggestions?