I have downloaded latest version od Spine and Unreal 4.27.
I created a new empty project on Unreal and I followed the Spine tutorial in order to integrate with Unreal for making an example.
However, when I do the steps 6 and 7 as described below, the Unreal try to compile these new source code and it crashes.
Steps:
6- Copy the contents of spine-runtimes/spine-ue4/Plugins/ to your project's Plugins/ folder.
7- Copy the folder spine-runtimes/spine-cpp/spine-cpp to your project's Plugins/SpinePlugin/Source/SpinePlugin/Public/ folder.
I found out the Tutoral has a mistake on step 7!!!!!!!
One should not copy "Public" folder. One should copy entire content of "include" and "src" folder, instead of copying folders.