Canot upload p12 file

[thinhnk]

I use loopback 3 for my project.
I trying to upload a p12 file. But now LB3 can't get filemime of file. Filemime is null.
Before is the response that i console log in node_modules\loopback-component-storage\lib\storage-handler.js, function form.handlePart

File to upload https://gofile.io/d/rYRJAq

Stream {                                                                                                                                                                                                           
  _events: [Object: null prototype] {},                                                                                                                                                                            
  _eventsCount: 0,                                                                                                                                                                                                 
  _maxListeners: undefined,                                                                                                                                                                                        
  readable: true,                                                                                                                                                                                                  
  headers: {                                                                                                                                                                                                       
    'content-disposition': 'form-data; name="image"; filename="covid.p12"',                                                                                                                                        
    'content-length': '3339'                                                                                                                                                                                       
  },                                                                                                                                                                                                               
  name: 'image',                                                                                                                                                                                                   
  filename: 'covid.p12',                                                                                                                                                                                           
  mime: null,                                                                                                                                                                                                      
  transferEncoding: 'binary',                                                                                                                                                                                      
  transferBuffer: ''                                                                                                                                                                                               
}                                                                                                                                                                                                                  
Error: contentType "null" is not allowed (Must be in [image/gif, image/jpeg, image/jpeg, image/png, image/tiff, image/tiff, text/plain, application/pdf, application/json, application/x-pem-file, application/x-x5
09-ca-cert, application/x-pkcs12, application/x-pkcs7-certificates, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/msword, application/vnd.openxmlformats
-officedocument.wordprocessingml.document, application/octet-stream])                     

[youknowme09]

@thinhnk I think its not a bug.
How do you request to upload a file?
below is my test screen capture

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

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