Error compiling for board Arduino Nano.

[Rudeusr]

How to fix it?

sketch\backend.cpp.o:(.progmem.data.sha1_constants+0x0): multiple definition of `sha1_constants'

sketch\sha1\constants.c.o:(.progmem.data.sha1_constants+0x0): first defined here

sketch\backend.cpp.o: In function `sha1_hash_block(sha1_hasher_s*)':

sketch\sha1/hash.c:23: multiple definition of `sha1_init_state'

sketch\sha1\constants.c.o:(.progmem.data.sha1_init_state+0x0): first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino Nano.

[Rudeusr]

tryed to compile "Arduino_Code.ino" for Arduino NANO ATmega328. but that

[BBS215]

Use Arduino IDE instead of Visual Studio or anything else.
https://www.arduino.cc/en/software

[Rudeusr]

I just update Arduino IDE to the lastest version