Not valid openSSL

I tried to install client nextcloud and i make all instructions in this link [https://docs.nextcloud.com/desktop/2.3/building.html]
but i found this error

CMake Warning at C:/Program Files/CMake/share/cmake-3.12/Modules/FindOpenSSL.cmake:405 (message):
VERSION is not a valid OpenSSL component
Call Stack (most recent call first):
CMakeLists.txt:186 (find_package)

CMake Warning at C:/Program Files/CMake/share/cmake-3.12/Modules/FindOpenSSL.cmake:405 (message):
1.1 is not a valid OpenSSL component
Call Stack (most recent call first):
CMakeLists.txt:186 (find_package)

CMake Error at C:/Program Files/CMake/share/cmake-3.12/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the
system variable OPENSSL_ROOT_DIR (missing: VERSION 1.1) (found version
“1.1.0h”)
Call Stack (most recent call first):
C:/Program Files/CMake/share/cmake-3.12/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
C:/Program Files/CMake/share/cmake-3.12/Modules/FindOpenSSL.cmake:412 (find_package_handle_standard_args)
CMakeLists.txt:186 (find_package)

Configuring incomplete, errors occurred!
See also “C:/Users/Administrator/Desktop/next cloud/client-build/CMakeFiles/CMakeOutput.log”.