Thank you for your help.

When I build Kdenlive with Craft, I get this error.

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-- Checking for module 'mlt++-7'
-- No package 'mlt++-7' found
CMake Error at C:/CraftRoot/dev-utils/cmake-base/share/cmake-3.19/Modules/FindPackageHandleStandardArgs.cmake:218 (message):
Could NOT find MLT (missing: MLT_LIBRARIES MLTPP_LIBRARIES MLT_INCLUDE_DIR
MLTPP_INCLUDE_DIR) (Required is at least version "7.0.0")
Call Stack (most recent call first):
C:/CraftRoot/dev-utils/cmake-base/share/cmake-3.19/Modules/FindPackageHandleStandardArgs.cmake:582 (_FPHSA_FAILURE_MESSAGE)
cmake/modules/FindMLT.cmake:65 (find_package_handle_standard_args)
CMakeLists.txt:61 (find_package)

-- Configuring incomplete, errors occurred!
See also "C:/CraftRoot/build/_/3377f5a/build/CMakeFiles/CMakeOutput.log".
See also "C:/CraftRoot/build/_/3377f5a/build/CMakeFiles/CMakeError.log".
Action: compile for kde/kdemultimedia/kdenlive:21.08.1 FAILED
*** Craft all failed: kde/kdemultimedia/kdenlive after 12 seconds ***
fatal error: package kde/kdemultimedia/kdenlive all failed
Craft stopped with out completing ['kde/kdemultimedia/kdenlive']
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I've been researching and I'm having trouble finding a solution.
If you know the solution, please help me.