JIRA DVCS Connector Plugin throws NullPointerException when getting activity stream on dashboard

Summary

Getting the following error in the activity stream if all streams are chosen.
"An error occurred while trying to retrieve recent activity"
All streams work if any 1 stream is unchecked.

JIRA DVCS Connector Plugin (jira-bitbucket-connector-plugin) throws NullPointerException when getting activity stream on dashboard. Plugin is not visible in available streams, so there is no way to disable it explicitly.

Steps to Reproduce

Some actions in JIRA (not able to reproduce problem locally).

1. Open dashboard with Activity stream

Expected Results

Activity stream is loaded.

Actual Results

Getting the following error in the activity stream: "An error occurred while trying to retrieve recent activity"

2016-08-09 06:44:27,048 ajp-bio-127.0.0.1-8009-exec-3449 ERROR admin 404 12 10.33.220.7 /plugins/servlet/streams [streams.internal.servlet.StreamsActivityServlet] Error getting activity
java.lang.NullPointerException
        at com.atlassian.jira.plugins.dvcs.util.SystemUtils.getAllProjectKeys(SystemUtils.java:137)
        at com.atlassian.jira.plugins.dvcs.webwork.IssueAndProjectKeyManagerImpl.getAllProjectKeys(IssueAndProjectKeyManagerImpl.java:91)
        at com.atlassian.jira.plugins.dvcs.streams.DvcsStreamsActivityProvider.includeHistoricalProjectKeys(DvcsStreamsActivityProvider.java:317)
        at com.atlassian.jira.plugins.dvcs.streams.DvcsStreamsActivityProvider.getActivityFeed(DvcsStreamsActivityProvider.java:272)
        at com.atlassian.streams.internal.LocalActivityProvider.getActivityFeed(LocalActivityProvider.java:115)
...

Notes

Plugin full path: com.atlassian.jira.plugins.jira-bitbucket-connector-plugin
Problem fixed in later version 3.3.20+
JIRA 6.4.12: has version 3.2.4
JIRA 7.1.8: has 3.3.30

Workaround

• If you don't have any DVCS Accounts configured (integration with Bitbucket or GitHub) then disable JIRA DVCS Connector Plugin.
• Some users reported that problem fixed after JIRA restart.