Plugin creating include error

Hello! I’m creating a plugin and i have included in PCH file the “ModuleManager.h” and “EngineUtils.h”. I’m using in plugin the EngineUtils::FindOrLoadAssetsByPath method.
But now i have compilation errors:

c:\program files\epic games\4.10\engine\source\runtime\engine\classes\engine\PendingNetGame.h(87): error C3646: ‘URL’: unknown override specifier
1>c:\program files\epic games\4.10\engine\source\runtime\engine\classes\engine\PendingNetGame.h(87): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\program files\epic games\4.10\engine\source\runtime\engine\classes\engine\PendingNetGame.h(99): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\program files\epic games\4.10\engine\source\runtime\engine\classes\engine\PendingNetGame.h(99): error C2143: syntax error: missing ‘,’ before ‘&’
1>C:\Program Files\Epic Games\4.10\Engine\Source\Runtime\Engine\Public\EngineUtils.h(618): error C2061: syntax error: identifier ‘FViewport’

If i include the “Engine.h” then errors fixed. But how i can fix these errors without “Engine.h”?
Thanks!