Unable to upload a image file in jmeter upload request - (image is - Base64 encrypted format)

### Expected behavior

Hi,

I have a file upload request where, i need to select the files to upload, as soon as i select an image - its is encrypted by base64 and new encrypted URL is passing when i check in the network tab from UI . I need to replicate the same which im unable to replicate.

Any help, would be appreciated !

### Actual behavior

content type not supported , upload failed

### Steps to reproduce the problem

sending http request with file path, file name and content type

### JMeter Version

5.6.2

### Java Version

_No response_

### OS Version

_No response_