Not able to add as a CMake dependency

I get the following error when I try to run my project after I add NFHTTP as a dependency in my CMakeLists.txt file

```
libc++abi: terminating with uncaught exception of type nlohmann::detail::parse_error: [json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal
[1]    49526 abort
```

Can you please help me integrate it?