"Failed to initialize Swarm. Check to make sure you have the right version of Swarm installed."

Hi i’m pretty new to ue4, when i tried to build the lighting this showed up “Failed to initialize Swarm. Check to make sure you have the right version of Swarm installed.” I searched on forums and have not found anyone with similar problem. I thought there could be some problems with my game so I created a brand new project but the same message appeared when i tried to build lighting. Should i reinstall ue4?

Well, you could probably only reisntall swarm agent, but reinstalling whole UE4 is sure bet.