I'm trying to give Build a project in Visual Studio and this error is appearing:
Severity Code Description Project File Line Suppression State
Error LNK2001 unresolved external symbol "class CPSock ListenSocket" (?ListenSocket@@3VCPSock@@A) TMSrv C:\Users\Hudson\Documents\Visual Studio 2015\Projects\W2PP\Code\TMSrv\Server.obj 1
Severity Code Description Project File Line Suppression State
Error LNK1120 1 unresolved externals TMSrv C:\Users\Hudson\Documents\Visual Studio 2015\Projects\W2PP\Build\Debug\Server\TMSrv\run\TMSrv.exe 1
Does anyone know what it can be?