Unable to locate the program input point @ximgproc@cv@.... on the dynamic link library exe

When installing the opencv expansion library, this problem will occur after the expansion library is installed and called.
The reason is that the computer has more than one opencv_world470d.dll, or there are different versions. I don’t know which one to look for.
The solution is to copy the opencv_world470d.dll file, or It is a lot of compiled DLL files that are placed under \x64\Debug\ of the code, that is, placed next to the generated .exe file.
Compile the test code again.

The graph is successfully generated and the skeleton points are found using the expansion library.