https://bugzilla.redhat.com/show_bug.cgi?id=1455279
--- Comment #4 from Roland Grunberg rgrunber@redhat.com --- Could you try running from the commandline :
'rpm -q javaewah'
Does the result reveal the exact version of javaewah installed on the system ? Should be javaewah-1.1.6-1.fc26.noarch. If not try installing javaewah and then launch eclipse once again from the commandline with just the '-clean' option (only need to do this one time) to see if that resolves the issue.
If javaewah was on the system to begin with, then can you confirm whether the symbolic link /usr/share/eclipse/droplets/egit-egit/eclipse/plugins/com.googlecode.javaewah.JavaEWAH_1.1.6.jar exists and points to a valid location ?