Unable to load Excel file because we couldnt understand its format error?

Hi. The warning is saying that one of the files has an issue. I have read about this before. It's like the excel file wasn't saved properly in xlsx. Most users solve it opening the excel files from sharepoint at their excel desktop and save it again checking the format is xlsx.

You can read something similar in this post: https://community.fabric.microsoft.com/t5/Service/DataFormat-Error-We-were-unable-to-load-this-Excel-file-because/m-p/4803572

Or this one: https://community.fabric.microsoft.com/t5/Service/We-were-unable-to-load-this-Excel-file-because-we-couldn-t/m-p/4734270

I hope that helps,