When I install obs-multi-rtmp, always got error

I used yay -S or pamac install to install obs-multi-rtmp, and I got the below error always.

CMake Error at CMakeLists.txt:74 (find_package):
By not providing “FindLibObs.cmake” in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by “LibObs”, but
CMake did not find one.

Could not find a package configuration file provided by “LibObs” with any
of the following names:

LibObsConfig.cmake
libobs-config.cmake

Add the installation prefix of “LibObs” to CMAKE_PREFIX_PATH or set
“LibObs_DIR” to a directory containing one of the above files. If “LibObs”
provides a separate development package or SDK, be sure it has been
installed.

Anyone can help me to fix this problem? thank you so much.

:person_shrugging: