File upload error / MimeType detection seems wrong / xslx

after upgrading a kirby setup (composer update) i cannot upload Excel-Files anymore:


kirby states: “The media type “text/html” is not allowed” which is strange as the mime type of an Excel-file should be something like application/vnd.openxmlformats-officedocument.spreadsheetml.sheet. The blueprint itself didn’t change, just the underlying versions of certain libs. It might also be an updated PHP version in place but i am not sure to be honest.

All the kirby that read (especially MIME::type should return the correct mime type, but i get the given error.

Any ideas? help? hints?

Thanks in advance,

Thomas E.-E.

If I understand you correctly, you didn’t update Kirby, or did you? What is your Kirby version (and if you did update Kirby, from what version)? And what are the