Unresolved externals

I am getting this error when I try to compile my project:

unresolved externals

Severity Code Description Project File Line Suppression
State Error MSB3075 The command
“C:\unreal\UE_4.22\Engine\Build\BatchFiles\Build.bat TanksEditor Win64 Development
-Project=“C:\unreal\tankgame\Tanks\Tanks.uproject”
-WaitMutex -FromMsBuild” exited with code 5. Please verify that you have
sufficient rights to run this
command. Tanks C:\Program Files
(x86)\Microsoft Visual
Studio\2017\Enterprise\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets 44

How to fix this error ?

Can you put full compilation log?