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    Expert tip

    Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

Solutions on the web

via Atlassian JIRA by Seb Ruiz, 2 years ago
via Atlassian JIRA by Seb Ruiz, 1 year ago
via GitHub by XakepSDK
, 11 months ago
Slot cannot be null!
via Sonatype JIRA by Joseph Stephens, 9 months ago
via Atlassian JIRA by Seb Ruiz, 1 year ago
sourceName must not be null
via Atlassian JIRA by Seb Ruiz, 2 years ago
sourceName must not be null
java.lang.NullPointerException: sourceName must not be null	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:203)	at com.cenqua.crucible.revision.source.RepositorySource.(RepositorySource.java:78)	at com.cenqua.crucible.revision.source.SourceFactory.makeRepositorySource(SourceFactory.java:82)	at com.cenqua.crucible.revision.source.SourceFactory.makeSource(SourceFactory.java:78)	at com.cenqua.crucible.revision.source.SourceFactory.getSource(SourceFactory.java:58)	at com.cenqua.crucible.revision.source.SourceFactory.getSource(SourceFactory.java:39)	at com.cenqua.crucible.filters.CrucibleFilter$Context.getSource(CrucibleFilter.java:47)	at com.cenqua.crucible.filters.CrucibleFilter.getSource(CrucibleFilter.java:130)	at com.cenqua.crucible.actions.create.EditRevisionsAction.getSource(EditRevisionsAction.java:187)	at com.cenqua.crucible.actions.create.EditRevisionsAction.doView(EditRevisionsAction.java:301)	at com.cenqua.crucible.actions.create.AddPatchAction.doView(AddPatchAction.java:64)	at com.cenqua.crucible.actions.create.EditRevisionsAction.execute(EditRevisionsAction.java:259)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)