SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder"

[Milamber]

Hello,

When the ant distribution task works, in test section, I found this 
message, I don't know where is from?

https://builds.apache.org/job/JMeter-trunk/lastSuccessfulBuild/console

     [java] .........SLF4J: Failed to load class 
"org.slf4j.impl.StaticLoggerBinder".
     [java] SLF4J: Defaulting to no-operation (NOP) logger implementation
     [java] SLF4J: Seehttp://www.slf4j.org/codes.html#StaticLoggerBinder  for 
further details.


Milamber