The most common cause is a corrupted tag set.
Follow the below to resolve:
Go to the Chart menu and select Tag Sets.
Confirm that only one tag set exists (for example, Chart Sections).
Select the tag set and click Delete Set.
📌Note: Reporting will continue to work after deletion.
To reinstate the Chart Sections tag set:
In the same window, click Copy.
Select another Trust ledger.
Choose Chart Sections as the source tag set.
Click Copy.