I was trying to run a binary on my raspberry, called mapshot but the code had some issues. I created a new issue and the code owner fixed it.

During that time i was configuring my raspian server and also run apt-get update and other things, then I saw he fixed the code and i was trying to run it again(v13).
Then I got an error cannot execute binary file: Exec format error. I was thinking maybe he messed something up, so i was trying the older version v12. But I started to get the same issue.

I googled up, then I saw, the file is: mapshot-linux13: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, Go BuildID=uddLtPxdcvoAGXUXjLzN/18KPkQR-w3AkfEdyv7ZO/8woBqF8KCDZW7lw-YD2O/r5WVmHnTYn0RB8KU0AgZ, not stripped

and my system architecure is ARM:

mapshot@raspberrypi:~ $ cat /proc/cpuinfo
processor       : 0
model name      : ARMv7 Processor rev 4 (v7l)
BogoMIPS        : 38.40
Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xd03
CPU revision    : 4
...

Which is completetly make sense, but then how was I able to run it before without any issue? I was getting the error from the script, i was able to run with the --help command..etc