Build level failing

I have never had this issue before, but since using 4.16, every time I try to build my level it would fail at 3% and give me the following error shown in the screenshot.

I have tried migrating my assets to a new project, starting new projects all together and re importing the assets, building just the lighting, etc. and the same thing would happen every time. What could I be doing wrong? Any suggestions? I am using the materials from the free Automotive Materials pack, as well as static mesh actors imported from .fbx files that were made in Maya.

same problem with me also, anyone help us to rectify this problem

7:09:21 PM: Step 1 of N for message: (09C74760 → 09C74760), JOB_STATE, Message Count 1 (Agent)
7:09:21 PM: Step 2 of 4 for message: (09C74760 → 09C74760), JOB_STATE, Message Count 1 (Local Connection)
7:09:21 PM: Step 3 of 4 for message: (09C74760 → 09C74760), JOB_STATE, Message Count 0 (Local Connection)
7:09:21 PM: Step 4 of 4 for message: (09C74760 → 09C74760), JOB_STATE, Delivered (Local Connection)
7:09:21 PM: [PingCoordinator] Determined that we couldn’t ping the coordinator
7:09:21 PM: [PingCoordinator] CoordinatorResponding is false
7:09:21 PM: [MaintainConnections] Maintaining Connection (09C74760)
7:09:21 PM: [MaintainConnections] Local connection alive (09C74760)
7:09:21 PM: [Maintain Jobs] Job “UnrealLightmass_2017-08-12_05-15-06_1064896-64bit.exe” has been running for 0.2290131 seconds
7:09:21 PM: LogLightmass:Display: Lightmass Win64 started on: EARTH. Command-line: B77F706142B4F2E13ECDB38C990EE45B
7:09:21 PM: Failed to determine engine directory: Defaulting to …/…/…/Engine/
7:09:21 PM: Lightmass Win64 started on: EARTH. Command-line: B77F706142B4F2E13ECDB38C990EE45B
7:09:21 PM: LogLightmass:Display: Processing scene GUID: B77F706142B4F2E13ECDB38C990EE45B with 10 threads
7:09:21 PM: Processing scene GUID: B77F706142B4F2E13ECDB38C990EE45B with 10 threads
7:09:21 PM: Building static lighting…
7:09:21 PM: [OpenConnection] Registering TCP channel …
7:09:21 PM: LogSwarmInterface:Error: [OpenConnection] Failed to find Swarm Agent
7:09:21 PM: [OpenConnection] Failed to find Swarm Agent

7:10:25 PM: [PingRemoteHost] Failed to ping RENDER-01 with RENDER-01
7:10:25 PM: [PingRemoteHost] Exception details: An exception occurred during a Ping request.
7:10:25 PM: [PingCoordinator] Determined that we couldn’t ping the coordinator
7:10:25 PM: [PingCoordinator] Coordinator ping failed