Guys I think I found the way how to bypass UDK errors like these.
These tutorials aren’t helpful unfortunately.Porting UE3 (UDK) Maps to Unreal Engine 4 (Quick Tutorial) - YouTube is a tutorial for those who have problems with any UDK problems. I hope this will help anyone in your any game projects you have in the future.NINJA RIPPER TUTORIAL - YouTube is alternative for UT4XConverter tool.Extract SCENE from Unity Game (Map/Level Rip) - YouTube you think this will even help me?