This article describes how to troubleshoot the issue encountered with Polls for Confluence after upgrading/migrating Confluence to 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 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 reference:
java.io.ObjectInputValidation,\ com.opensymphony.xwork.util.XWorkList,\ net.sf.hibernate.proxy.HibernateProxy
Stop and restart the server.
This workaround is required only for 7.x versions, and not the 8.x versions.