SYMPTOM:
When attempting to execute a report or Report Services document that includes an ESRI map in Strategy Analytics Enterprise Web 9.4.1 - 10.5, a user sees the following error:

Sample Code/Error
Error loading Configuration: In com.Strategy.web.tasks.AggregatingTaskFactory.newTask: Task 'getESRIConfig' could not be instantiated: com.Strategy.web.tasks.GetESRIConfigurationTask