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How This article describes how to troubleshoot the issue encountered with Polls for Confluence app after upgradeupgrading/migration of the migrating Confluence to 7.19.18 and above versions of 7.x.

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Instructions

Follow the below given steps:

1. Navigate to the Confluence server installed location at this path:
   <confluencePath>/atlassian-confluence-7.19.18/confluence/WEB-INF/classes/velocity.properties

2. Make below the following changes to the file velocity.properties: -

   1. Go to introspector.allowlist.classes.

   -

   1. Add

   this line to the existing values in the new line

   1. com.opensymphony.xwork.util.XWorkList to the existing values on a new line.

      Sample reference:

      Code Block
      java.io.ObjectInputValidation,\ com.opensymphony.xwork.util.XWorkList,\ net.sf.hibernate.proxy.HibernateProxy

3. Stop and start restart the server.