Warning: Failed to build lighting! Lighting build failed

I recently built UE 4.18 from the source code provided via epic’s github. Upon creating a project, adding MyProjectServer.Target.cs to the source folder, switching the engine version of the project to the source compiled UE4, building the project under the Development Editor solution, then building the project under the Development Server solution, and finally building the Unreal Lightmass CPP, I still encounter the following error when attempting to build lighting within the editor:

MapCheck: New page: Map Check
LightingResults: New page: Lighting Build - Feb 28, 2018, 10:37:03 AM
LogSwarmInterface: [OpenConnection] Registering TCP channel …
LogSwarmInterface: [OpenConnection] Connecting to agent …
LogSwarmInterface: [TryOpenConnection] Testing the Agent
LogSwarmInterface: [TryOpenConnection] Opening Connection to Agent
LogSwarmInterface: [TryOpenConnection] Local Process ID is 8672
LogStaticLightingSystem: Warning: No importance volume found, so the scene bounding box was used. You can optimize your scene’s quality and lighting build times by adding importance volumes.
LogStaticLightingSystem: Running Lightmass w/ ImmediateImport mode ENABLED
LogStaticLightingSystem: Running Lightmass w/ ImmediateProcess mode ENABLED
LogStaticLightingSystem: Running Lightmass w/ Sorting mode ENABLED
LogStaticLightingSystem: Running Lightmass w/ Mapping paddings ENABLED
LogStaticLightingSystem: Running Lightmass w/ Mapping debug paddings DISABLED
LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build failed.
LogEditorBuildUtils: Build time 0:03

To provide as many additional details as possible, I’ll mention that I had created the project as an empty C++ project (Basic Code). I’ve attempted cleaning the Unreal Lightmass CPP, rebuilding it, building it; all come back successfully built with no errors or warnings in VS 2017. I’ve also attempted deleting various actors within the empty level within the project such as the sphere reflection capture, sky sphere, light source, etc; no results. I’ll also clarify that regardless as to whether the map contains a Lightmass Importance Volume or not, the lighting build still fails. There are no assets within the content browser. I’ve attempted building the Unreal Lightmass CPP and attempted building lighting within the editor while my firewalls are disabled, but it’s also yielded no results. I’ve also made sure that multiple instances of the Swarm Agent were not running when attempting to build lighting, but this doesn’t seem to be the issue. The warning stating the lighting build failed is rather vague, so I’m not entirely sure what the issue may truthfully be. I’m not receiving any errors or warnings stating that the Swarm Agent has failed to kick off. The only thing I haven’t tried is to uninstall the source-compiled engine and re-install, set up the source-compiled Unreal Engine, and again generate the project files, etc. Any and all help would be greatly appreciated.