log scan (hercules) throw regex.PatternSyntaxException in log

2015-03-27 21:27:46,357 ERROR [HerculesWorker_1] [com.atlassian.sisyphus.SisyphusPattern] compile Failed to compile pattern '"Track another decision/Create decision" button no longer works' at https://confluence.atlassian.com/pages/viewpage.action?pageId=442271772
 -- referer: http://localhost:5560/plugins/servlet/stp/view/ | url: /plugins/servlet/stp/view/hercules/execute | userName: admin
java.util.regex.PatternSyntaxException: Dangling meta character '?' near index 0
??
..
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2015-03-27 21:27:46,359 ERROR [HerculesWorker_1] [com.atlassian.sisyphus.SisyphusPattern] compile Failed to compile pattern 'JIRA issues macro displays "USER_UNKNOWN"' at https://confluence.atlassian.com/pages/viewpage.action?pageId=365003703
 -- referer: http://localhost:5560/plugins/servlet/stp/view/ | url: /plugins/servlet/stp/view/hercules/execute | userName: admin
java.util.regex.PatternSyntaxException: Dangling meta character '?' near index 0
??USER_UNKNOWN|Unknown User:
^
..
..
2015-03-27 21:27:46,363 ERROR [HerculesWorker_1] [com.atlassian.sisyphus.SisyphusPattern] compile Failed to compile pattern 'Duplicate NOTIFICATIONID When Creating/Editing a Content (Page, Comments, etc.)' at https://confluence.atlassian.com/pages/viewpage.action?pageId=353273164
 -- referer: http://localhost:5560/plugins/servlet/stp/view/ | url: /plugins/servlet/stp/view/hercules/execute | userName: admin
java.util.regex.PatternSyntaxException: Dangling meta character '?' near index 0
??org\.springframework\.dao\.DataIntegrityViolationException\: Hibernate operation\: could not insert\: com\.atlassian\.confluence\.mail\.notification\.Notification
^