slf4j & log4j2 maven setup query

Question

I am using log4j2 and slf4j in my project & using maven for the build. I am using the following pom file (releveant dependencies shown only) but I am getting the error

Answer 1

Apart from the log4j-slf4j-impl dependency, you also need the slf4j-ext dependency.

See http://logging.apache.org/log4j/2.x/log4j-slf4j-impl/dependencies.html