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Error for board DOIT ESP32 DEVKIT V1

I am using esp32 module, I use DOIT ESP32 DEVKIT V1 on Arduino ide to compile but while compiling file it gives Error compiling for board DOIT ESP32 DEVKIT V1 error message

error message:
Arduino: 1.8.14 (Windows 7), Board: “DOIT ESP32 DEVKIT V1, 80MHz, 921600, None”

In file included from C:\Users\USER\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/Arduino.h:40:0,

             from sketch\sketch_sep23d.ino.cpp:1:

C:\Users\USER\Documents\Arduino\sketch_sep23d\sketch_sep23d.ino: In function ‘void gasmq7()’:

C:\Users\USER\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32/binary.h:38:19: error: expected unqualified-id before numeric constant

#define B00000001 1


C:\Program Files (x86)\Arduino\libraries\LiquidCrystal_I2C/LiquidCrystal_I2C.h:53:12: note: in expansion of macro ‘B00000001’

#define Rs B00000001 // Register select bit


C:\Users\USER\Documents\Arduino\sketch_sep23d\sketch_sep23d.ino:25:7: note: in expansion of macro ‘Rs’

float Rs = ( 5.00 * RL / VRL ) - RL;


exit status 1

Error compiling for board DOIT ESP32 DEVKIT V1.


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