C:\Users\源?留뚯옱\AppData\Local\Temp\_AZTMP2_\Fine_Dust_Detector_MK1-SIMPTEAM\Fine_Dust_Detector_MK1-SIMPTEAM.ino:12:56: fatal error: LiquidCrystal_I2C.h: No such file or directory

compilation terminated.

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

라고 뜹니다. 왜이러죠