[Yandex DataLens] Invalid file format

ERR.FILE.PARSE_FAILED.INVALID_EXCEL

This error raises when attempting to upload an .xlsx file with incorrect metadata as a source for a file connection. For example, it can occur if the file was obtained as a result of exporting from a database.

To fix it, save the file in a spreadsheet editor such as Microsoft Excel.

If the error persists, contact Yandex Cloud support. In your message, describe when the error occurs.