Custom map console error

I downloaded a map of the Internet and is showing this message on the console immediately after the message the console closes .

Code:

(-1) couldn't be loaded because it has not been added to the build settings or the AssetBundle has not been loaded.
To add a scene to the build settings use the menu File->Build Settings...
Level load complete. Operation took 50.7878685 seconds
Level root not assigned by map, ensure you have LevelRootRegister in the root of the map. Quitting
Exception when loading navmesh Object reference not set to an instance of an object  at RuntimeAssetManager.LoadNavmesh () [0x00000] in <filename unknown>:0
No navmesh loaded, creatures won't be able to move.

 

I played the map file " blackworldbeta.win64.map " in Hurtworld_Data folder \ maps , and put on the host "....host 12871 blackworldbeta ; enforceeac....." . He reads the file and recognizes the map , but after a few minutes this message appears and the console closes .

 

I belive that is an issue when exporting the map in unity. Map developers need to add the scene to the project settings before exporting the map.

I tried to host using a map from community workshop and got that error. Then I made a small map myself and added the unity scene to the project settings and it load fine.