cmake can't find a package configuration file

[VictorCerezini]

I have installed io2d, cairo and graphics magic using vcpkg, and I am using Visual Studio 2019. Cmake gives me this error:

CMake Error at F:/VisualStudio/vcpkg/scripts/buildsystems/vcpkg.cmake:786 (_find_package):
Could not find a package configuration file provided by "unofficial-cairo"
with any of the following names:

unofficial-cairoConfig.cmake
unofficial-cairo-config.cmake

Add the installation prefix of "unofficial-cairo" to CMAKE_PREFIX_PATH or
set "unofficial-cairo_DIR" to a directory containing one of the above
files.  If "unofficial-cairo" provides a separate development package or
SDK, be sure it has been installed.

I already specified the location of the CMAKE_TOOLCHAIN_FILE and I have also already integrated vcpkg using the command "vcpkg integrate install".

[theaddies]

The instructions are missing one final step.
git clone --recurse-submodules https://github.com/cpp-io2d/P0267_RefImpl
cd P0267_RefImpl
mkdir Debug
cd Debug
cmake --config Debug "-DCMAKE_BUILD_TYPE=Debug" ..
cmake --build .
sudo make install