undefined reference to `_Z11send_deauthhi'

[HEINZGUENTER]

Hello, I'm trying to compile a project but it gives me this error:

Code: Select all

/home/heinz/.arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.1.0-gcc10.3-e5f9fec/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld: /tmp/arduino/sketches/5105FD61D7A094086484F017D5935B53/sketch/deauther.cpp.o:(.text._Z6deauthiPh+0x0): undefined reference to `_Z11send_deauthhi'
collect2: error: ld returned 1 exit status

exit status 1

Compilation error: exit status 1

I don't really have much experience and apologize if its a stupid question but I didn't find an answer online

[Inq720]

One would have to see the code causing the error to be of any help. Also, I Google'd your error and got plenty of hits. I won't regurgitate what those told me.