Legacy Knowledge Base
Published Sep. 10, 2025

Changes to Site Templates are not propagated to pages

Written By

Daniel Mijarra

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Issue

  • Changes made to a site template are not propagated to the pages that use the template.
  • We can see the next error in the server log:
[LayoutSetPrototypeMergeBackgroundTaskExecutor:219] Merge fail count increased to 1 for layout set prototype 11111
com.liferay.exportimport.kernel.exception.ExportImportRuntimeException: class java.util.HashMap cannot be cast to class java.util.TimeZone

Environment

  • Liferay DXP 2024.Q4

Resolution

  • The issue is caused by missing sun.util.calendar.ZoneInfo class name in the json.deserialization.whitelist.class.names property.
  • Check if the json.deserialization.whitelist.class.names property is present in your portal-ext.properties file and contains the sun.util.calendar.ZoneInfo value (see portal.properties#L7574-L7612 for reference).
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