runtime exception related to Logger

[BEBEBE]

Im getting a confusing runtime error:

(run-main-0) java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

at reactivemongo.util.LazyLogger$.apply(LazyLogger.scala:27)

at reactivemongo.api.MongoDriver$.<init>(api.scala:974)

at reactivemongo.api.MongoDriver$.<clinit>(api.scala)

at crowdPopulate.crowdPopulateStream$.delayedEndpoint$crowdPopulate$crowdPopulateStream$1(crowdPopulateStream.scala:20)

I did not include slf4j, is there a transitive dependency on this module?

[Cédric Chantepie]

That means you need to provide by yourself a SLF4J binding. ReactiveMongo cannot do it, otherwise no one wanting to use a different binding would be able to. So just pick up the one you prefer (e.g. logback, slf4j-simple, ...).

[BEBEBE]

simple as that. thanks!