# ERROR: "failedPrecondition: this operation is not supported for this document"

> Learn how to resolve the "failedPrecondition" error that may occur while working with Presto in Holistics

When I import a Google Spreadsheet or export to Google Spreadsheet, I encounter this error: 
`failedPrecondition: this operation is not supported for this document`?

This error happens normally because the file was saved in .xlsx extension and you need to converted it to Google Sheet format by importing the excel file in your google spreadsheet instead of directly uploading it to Google Drive.