This article describes explains how to troubleshoot resolve the issue encountered with the Polls for Confluence app after upgradingyou upgrade/migrating migrate to Confluence to version 7.19.18 and above versions of 7. x.
Instructions
Follow the given steps:
Navigate to the Confluence server installed location at this path:
<confluencePath>/atlassian-confluence-7.19.18/confluence/WEB-INF/classes/velocity.properties
Make Do the following changes to the file
velocity.properties
:Go to
introspector.allowlist.classes
.Add
com.opensymphony.xwork.util.XWorkList
to the existing values on a new line.
Sample
Example reference:Code Block java.io.ObjectInputValidation,\ com.opensymphony.xwork.util.XWorkList,\ net.sf.hibernate.proxy.HibernateProxy
Stop and restart the server.
Info |
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This workaround is required only for 7.x versions, and not the 8.x versions. |