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    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 Adam Ahmed [Atlassian], 1 year ago
person
via Atlassian JIRA by Shashank Maruvada [Atlassian], 1 year ago
person
java.lang.NullPointerException: person	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:226)	at com.atlassian.stash.internal.avatar.ConfigurableAvatarService.getUrlForPerson(ConfigurableAvatarService.java:199)	at com.atlassian.plugin.util.ContextClassLoaderSettingInvocationHandler.invoke(ContextClassLoaderSettingInvocationHandler.java:26)	at com.atlassian.stash.internal.web.soy.functions.AvatarUrlFunction.getUrl(AvatarUrlFunction.java:80)	at com.atlassian.stash.internal.web.soy.functions.AvatarUrlFunction.apply(AvatarUrlFunction.java:67)	at com.atlassian.stash.internal.web.soy.functions.AvatarUrlFunction.apply(AvatarUrlFunction.java:23)