How to log a message from a string variable in Unreal Engine?

Finally I am answering my own question here.

It doesn't compile because I need to use the TEXT Macro before giving a string into UE_LOG.

FString s = "ss";
 UE_LOG(LogTemp, Warning, TEXT("%s"), *s);

 //or

 UE_LOG(LogTemp, Warning, TEXT("ss"));

 //this should work
 UE_LOG(LogTemp, Warning, TEXT("%s"), *FPaths::GetPath("../"));

should work with Unreal's version of Datatypes instead of using the std library

If you really have to than you can convert std::string to FString and than log that like this.

std::string someString = "Hello!";
FString layerName(someString .c_str());
UE_LOG(LogTemp, Warning, TEXT("%s"), *layerName);