CPartialHubTraverseTaskState::Nibble: Unexpected exception in the Qlik Sense Engine and Windows event logs
Article Number: 000053026 | Last Modified: 2018/09/07
This symptom (extensive logging of: 'CPartialHubTraverseTaskState::Nibble: Unexpected exception') has been investigated earlier by R&D in bug reference number QLIK-83005 and the conclusion was: This is not a real error and should not be logged. The logged exception is part of the normal control flow for handling requests. There is ongoing work to remove this and other benign exceptions being logged. This issue should be closed when that work is complete.
R&D have further confirmed that you should not see this in the logs anymore if you upgrade to Qlik Sense version February 2018 and above. For now they can be safely ignored.