Why is the error Conflicting cross-version suffixes?
The conflicts appear because: you’ve specified your Scala version to be 2.11 you’ve explicitly specified the Scala version (2.10) for the reactivemongo and poi-scala libraries. The fix is to use the %% operator for those two libraries as well. “org.reactivemongo” %% “reactivemongo” % reactiveMongoVersion, “info.folone” %% “poi-scala” % foloneVersion That’s the purpose of the %% … Read more