DashScopeApi cannot upload Excel files

[zhaocun123]

Using the DashScopeApi.upload (File file, UploadRequest request) method, when the file suffix is. xlsx, the uploadLeave (request) method returns a null content type, resulting in the method error Invalid mime type "": 'mimeType' must not be empty; I tried to manually set the value of content type, but all of them reported signature errors. Does it not support documents in xlsx format? Or is this a bug