Description of problem:

The tailoring file creation fails when a invalid datastream file is uploaded which is a expected behavior. But a relevant meaningful message should get displayed to user instead of '500 Internal Server Error'

Version-Release number of selected component (if applicable): satellite-6.13.0-4.el8sat.noarch

How reproducible: Always

Steps to Reproduce:

1. Navigate to Satellite WebUI -> Hosts -> Tailoring Files -> New Tailoring File.

2. Enter the name and then browse and upload DataStream tailoring file which is not valid. Select the respective Organizations and Locations.

3. Hit submit.

Actual results: The Tailoring file cannot be created and it fails with below message. (Refer attached screen image)

Oops, we're sorry but something went wrong 500 Internal Server Error

Expected results: Some meaningful message like "Invalid Datastream tailoring file" should be shown on screen instead of failure with 500 Internal Server Error.

Additional info: Uploading valid datastream tailoring file leads to successful creation. It would be great if the datastream file is validated when it is browsed and uploaded and shows the relevant message then and there instead of waiting for user to hit Submit.