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  1. ,
    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.

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via GitHub by DanielThomas
, 2 years ago
This exception has no message.
via Google Groups by Paul C. Bryan, 7 months ago
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via Google Groups by juanpabl...@gmail.com (JIRA), 1 year ago
via Google Groups by Unknown author, 7 months ago
This exception has no message.
java.lang.NullPointerException: 	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)	at com.atlassian.confluence.event.events.content.page.PageUpdateEvent.(PageUpdateEvent.java:59)	at com.atlassian.confluence.pages.DefaultPageManager.publishUpdateEvent(DefaultPageManager.java:1237)	at com.atlassian.confluence.core.DefaultContentEntityManager.saveContentEntity(DefaultContentEntityManager.java:138)	at com.atlassian.confluence.pages.DefaultPageManager.saveContentEntity(DefaultPageManager.java:1154)