EDIT

run server and getting error
[2019.05.06-12.21.43:034][ 0]LogCollisionProfile: Warning: Profile (WeaponOnly) - Custom Channel Name = 'GameTraceChannel3' hasn't been found
[2019.05.06-12.21.43:034][ 0]LogCollisionProfile: Warning: Profile (WeaponOnly) - Custom Channel Name = 'GameTraceChannel4' hasn't been found
[2019.05.06-12.19.43:910][ 0]LogOnline: Warning: Mordhau: Steam API failed to initialize!

ServerDefaultMap=/Game/Mordhau/Maps/ThePit/FFA_ThePit.FFA_ThePit not found at defaultgame.ini