You are currently reviewing an older revision of this page.
Data fails to be exported to Excel using the shared component, “Download Data Subset”.
An error is seen in the log that indicates a class is missing, despite the plugin previously working. An error similar to the following is seen in the server log:
[[ACTIVE] ExecuteThread: '29' for queue: 'weblogic.kernel.Default (self-tuning)'] ERROR com.appiancorp.ra.workpoller.WorkItemListener - The following exception occurred while attempting to complete work item [(WorkId: 10, WorkType: [ExpressionGroupRequest: expressionGroupId=442, [ExpressionGroup as '1234567' context [Task:123]: isFileCorrect:readexcelsheet(pv!excelDocument_doc,0,1,1).result.values="Instructions" with values
Caused by: javax.ejb.EJBException: EJB Exception: : java.lang.NoClassDefFoundError: Could not initialize class org.apache.poi.openxml4j.opc.internal.marshallers.ZipPackagePropertiesMarshaller
The shared component, “Excel Tools”, contains a newer version of the same class referenced by “Download Data Subset”, causing a class loader conflict.
This article applies to all versions of Appian.
Last Reviewed: March 2017
© 2022 Appian. All rights reserved.