https://bugzilla.redhat.com/show_bug.cgi?id=1398889
--- Comment #3 from DAKSH abhijit4daksh@gmail.com --- Often I get error An internal error occurred during: "Initializing PHP Tooling". Could not initialize class org.apache.lucene.codecs.Codec$Holder Whenever I open Eclipse for the first time. Every time I get the error I have to close and re-open Eclipse again.