get_target_property() called with non-existent target "opencv_world"

I'm pretty new to using CMake to build/compile OpenCV projects in Visual Studio Code.

From my understanding so far, this is the 'typical' CMake file 'format' if I want to compile a OpenCV project

cmake_minimum_required(VERSION 3.0.0)

project(OpenCV_Hello_World VERSION 0.1.0 LANGUAGES C CXX)

# Specify the C++ standard
set(CMAKE_CXX_STANDARD 11)

# Find OpenCV package
find_package(OpenCV REQUIRED)

# Include OpenCV headers
include_directories(${OpenCV_INCLUDE_DIRS})

# Create the executable
add_executable(OpenCV_Hello_World main.cpp)

# Link OpenCV libraries
target_link_libraries(OpenCV_Hello_World PRIVATE ${OpenCV_LIBS})

In my main directory, I have :

• main.cpp
• CMakelists.txt
• build folder to hold all the files that get generated from the CMake file

With the CMake file listed above, when I use cmake -G "Unix Makefiles" .. and make to build/compile my main.cpp, I get the following error:

CMake Error at E:/Coding Folder/OpenCV Folder/build/win-install/x64/vc16/lib/OpenCVConfig.cmake:290 (get_target_property):
  get_target_property() called with non-existent target "opencv_world".

But if I were to specify where my OpenCV lib files are at with the set() command, I'm able to compile/build everything just fine.

Here's the CMake file that I'm currently using

cmake_minimum_required(VERSION 3.0.0)

project(OpenCV_Hello_World VERSION 0.1.0 LANGUAGES C CXX)

# Set the OpenCV directory
#set(OpenCV_DIR " INSERT PATH TO OPENCV LIB HERE ")

# Specify the C++ standard
set(CMAKE_CXX_STANDARD 11)

# Find OpenCV package
find_package(OpenCV REQUIRED)

# Include OpenCV headers
include_directories(${OpenCV_INCLUDE_DIRS})

# Create the executable
add_executable(OpenCV_Hello_World main.cpp)

# Link OpenCV libraries
target_link_libraries(OpenCV_Hello_World PRIVATE ${OpenCV_LIBS})

I was under the heavy impression that the find_package(OpenCV REQUIRED) command would 'find' my OpenCV files and I'm confused on why that's not the case.