Where do I go for help on "No SLF4J providers were found" ?

[pvbemmelen62]

Recently I noticed the message

SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.

when starting the Fitnesse wiki server.

I guess this is not related to the hsac fixtures; I'd normally create an issue on fitnesse.org , but fitnesse.org is not reachable, which may be related to unclebob/fitnesse#1387 .

Question: where do I go for help on this problem.

In case I came to the right place, here some info related to the problem:
Program jinfo provided a lot of info on the wiki process, with o.a. the following lines:

java.class.path=fitnesse-standalone.jar;C\:\\git\\toolchain\\wiki\\plugins\\hsac-fitnesse-plugin-1.32.10.jar;C\:\\git\\toolchain\\wiki\\plugins\\toolchain-fitnesse-plugin-2.0.16-jar-with-dependencies.jar^M

java_class_path (initial): fitnesse-standalone.jar

And I've added the dependency for groudId "org.slf4j" and artifactId "slf4j-simple" and version "2.0.7" to the pom, but that jar doesn't show up in the classpath of the wiki server, so I still "No SLF4J providers were found".

[fhoeben]

(fitnesse.org seems up to me)

The error is indeed something for https://github.com/unclebob/fitnesse, see unclebob/fitnesse#1329
But I believe it is not something to worry about. It has to do with fitnesse being both a library and executable. If the dependency would be added to the wiki executable (where I expect you see the error) than fixture developers would not be able to use their own slf4j logging provider in their fixtures (where the dependency you added to the pom.xml ended up, I actually believe this project already ensures a provider is available in the test process so it should not be necessary)

[pvbemmelen62]

You are right: when running a test, the Execution Log > Standard Error shows:

Standard Error:
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.
ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console...

so a SimpleLogger is used for the test process.

I'm worried that logging message from the wiki server process won't be printed.