Tried redownloading and I got more errors than before. Here is the error list:
Warning C4996 'sscanf': This function or variable may be unsafe. Consider using sscanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\Json.cpp 271
Warning C4996 'sscanf': This function or variable may be unsafe. Consider using sscanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\Json.cpp 283
Warning C4996 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\SkeletonBinary.cpp 366
Warning C4996 'strncat': This function or variable may be unsafe. Consider using strncat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\SkeletonBinary.cpp 368
Warning C4996 'FArchiveState::UE4Ver': Use UEVer instead which returns the version as a FPackageFileVersion. See the @FPackageFileVersion documentation for further details Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SpineAtlasAsset.cpp 65
Error C2039 'setRendererObject': is not a member of 'spine::AtlasPage' CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SpineAtlasAsset.cpp 112
Warning C4996 'FArchiveState::UE4Ver': Use UEVer instead which returns the version as a FPackageFileVersion. See the @FPackageFileVersion documentation for further details Please update your code to the new API before upgrading to the next release, otherwise your project will no longer compile. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SpineSkeletonDataAsset.cpp 78
Error C2039 'getRendererObject': is not a member of 'spine::RegionAttachment' CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SpineSkeletonRendererComponent.cpp 221
Error C2039 'getRendererObject': is not a member of 'spine::MeshAttachment' CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SpineSkeletonRendererComponent.cpp 238
Error C2039 'getRendererObject': is not a member of 'spine::RegionAttachment' CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SSpineWidget.cpp 279
Error C2039 'getRendererObject': is not a member of 'spine::MeshAttachment' CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Private\SSpineWidget.cpp 289
Warning C4996 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\Atlas.cpp 259
Warning C4996 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. CatIsland D:\Programy\unrealengine5projects\CatIsland\Plugins\SpinePlugin\Source\SpinePlugin\Public\spine-cpp\src\spine\Extension.cpp 109
Warning #include AssetRegistry/AssetRegistryModule.h instead of AssetRegistryModule.h CatIsland D:\UE_5.1\Engine\Source\Runtime\AssetRegistry\Public\AssetRegistryModule.h 6
Error MSB3073 The command "D:\UE_5.1\Engine\Build\BatchFiles\Rebuild.bat CatIslandEditor Win64 Development -Project="D:\Programy\unrealengine5projects\CatIsland\CatIsland.uproject" -WaitMutex -FromMsBuild" exited with code -1. CatIsland D:\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.MakeFile.Targets 50