Fill Data Table from CSV String throws error

When constructing a string in an Editor Utility Blueprint and using it to populate a Data Table, there is an error thrown in the log, followed by a success message:

LogDataTable: Error: Missing RowStruct while saving DataTable '/Game/Data/DT_CollectibleLocations.DT_CollectibleLocations', NeedLoad: 'false'!
LogCSVImportFactory: Imported DataTable 'DT_CollectibleLocations' - 0 Problems

However, the Data Table is correctly populated and saved. It functions like it’s supposed to but the error message raises a concern that something is still wrong. What is causing this error and how can it be fixed? Is it the Data Table being emptied prior to setting the new data?

The Editor Utility BP: