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    Take a look at this blog post on how to set up Grid2 A user related (in the email group on the source) that using older selenium libs solves this exception.

Solutions on the web

via GitHub by XakepSDK
, 8 months ago
Slot cannot be null!
via Sonatype JIRA by Joseph Stephens, 6 months ago
via Atlassian JIRA by Seb Ruiz, 1 year ago
via Atlassian JIRA by Seb Ruiz, 1 year ago
java.lang.NullPointerException: sourceName must not be null	at	at com.cenqua.crucible.revision.source.RepositorySource.(	at com.cenqua.crucible.revision.source.SourceFactory.makeRepositorySource(	at com.cenqua.crucible.revision.source.SourceFactory.makeSource(	at com.cenqua.crucible.revision.source.SourceFactory.getSource(	at com.cenqua.crucible.revision.source.SourceFactory.getSource(	at com.cenqua.crucible.filters.CrucibleFilter$Context.getSource(	at com.cenqua.crucible.filters.CrucibleFilter.getSource(	at com.cenqua.crucible.actions.create.EditRevisionsAction.getSource(	at com.cenqua.crucible.actions.create.EditRevisionsAction.doView(	at com.cenqua.crucible.actions.create.AddPatchAction.doView(	at com.cenqua.crucible.actions.create.EditRevisionsAction.execute(	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)