Error when start Solr cloud, due to location of 3rd party libraries

Question

I tried to migrate to Solr 3.1 , my project uses Dataimport handler , when I started solr it asked me SolrCoreAwar not found I copied the following file to lib directory apache-

Answer 1

The problem is most probably deeper, but you could try putting slf4j apis in your class path. (http://www.slf4j.org/download.html).