No rule to make target '../include/curl/curl.h'

[Texlo-Dev]

Hi, So I've attempted to build this library on my Ubuntu 18.04 machine. However, before the process can finish, I am greeted with this error.

[build] [ 70%] Built target lib512
[build] make[2]: *** No rule to make target '../include/curl/curl.h', needed by 'deps/sleepy-discord/deps/cpr/opt/curl/tests/libtest/lib1521.c'.  Stop.
[build] make[1]: *** [deps/sleepy-discord/deps/cpr/opt/curl/tests/libtest/CMakeFiles/lib1521.dir/all] Error 2
[build] make[1]: *** Waiting for unfinished jobs....
[build] CMakeFiles/Makefile2:4612: recipe for target 'deps/sleepy-discord/deps/cpr/opt/curl/tests/libtest/CMakeFiles/lib1521.dir/all' failed

Tried googling it but I didn't really get anything helpful. I have curl installed on my system already however. So what is the main issue here?