Download to XLSX files error

When I download some specific columns and lines, I get this message
''Excel cannot open file 'xxx' because the file format or extension is not valid. Check if the file is not corrupted and that the extension matches the file format.''
Before last Metabase's update this wasn't happening, and the data doesn't have special characters and is not too long.

Hi @Phelipe
Post "Diagnostic Info" from Admin > Troubleshooting.
If you are not using the latest release, then upgrade:
And open the downloaded file in a text viewer, since it likely contains a stacktrace error.