import Excel

I can’t import data with Excel and the error message is (in f12 console)

Cannot play media. No decoders for requested formats: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

My file is Excel with the .xlsx extension
and all columns match the field names in the database

It seemed that your excel file cannot be opened. How did you create the excel file? Try exporting the file from the Export to excel feature (with EPPlus extension enabled) and use the file as the base for import.