Searched on Google with the first line of a JAVA stack trace?

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via Atlassian JIRA by Ivan Benko [Atlassian], 2 years ago
via Atlassian JIRA by Ivan Benko [Atlassian], 1 year ago
java.lang.IllegalArgumentException: Null space key in spaces list at com.atlassian.confluence.search.v2.query.InSpaceQuery.<init>(InSpaceQuery.java:39)