DRAFT KB-XXXX "An error occurred while retrieving the report" thrown when accessing process reports

Symptoms

The following error is seen when accessing process reports:

An error occurred while retrieving the report.

The corresponding error message is seen in the application server log:

ERROR com.appiancorp.process.analytics2.display.ProcessAnalyticsReportData - com .appiancorp.kougar.mapper.exceptions.ReturnException: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang .String unable to convert <[collection class]> of type <class java.util.Arrays$ArrayList> to type <class com.appiancorp.process.analytics2.service.ReportResultPageRows>

Cause

This issue has been addressed via AN-135990 in the following hotfixes/versions:

• 18.1 Hotfix Package Q
• 18.2 Hotfix Package T
• 18.3 Hotfix Package R
• 18.4 Hotfix Package O
  
• 19.1 Hotfix Package K
  
• 19.2 Hotfix Package G
  

Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.

Affected Versions

This article applies to Appian 18.1 to 19.2. This has been addressed in versions 19.3 and later.

Last Reviewed: February 2020