No data could be exported

What causes this issue?

You tried to export data from the quality control chart for statistical
evaluation. This is only possible for data that has already been
written to the database. No data exists in the database for the current
control chart.

System Response

Processing was canceled.

How to fix this error?

Save the data in inspection results recording, and call up the control
chart again.

Error message extract from SAP system. Copyright SAP SE.