No SLF4J providers were found warning with fscrawler 2.10

Question

I have upgraded fscrawler from 2.9 to 2.10. I tried the same command towards indexing that I used in the older version:

/usr/bin/fscrawler --config_dir /home/user1/conf test_index --restart --loop 1

I see the following warning about SLF4J:

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.
SLF4J: Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x or earlier.
SLF4J: Ignoring binding found at [jar:file:/usr/local/src/fscrawler-distribution-2.10-SNAPSHOT/lib/log4j-slf4j-impl-2.20.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See https://www.slf4j.org/codes.html#ignoredBindings for an explanation.

I am using Log4j for logging purposes instead of using any Java logging library. How to get rid of the above warning related to SLF4J?

Answer 1

Did you download the latest build or an old one?

Make sure you download the latest build. That should be fixed.