No error message when attempting to create an artifact without file

[nino-filigran]

Description

In theory, when a object is attempted to be created, there is a validation on the mandatory fields. This validation occurs, but no error message is displayed. It would be great to have an error message indicating to the user that a file must be uploaded for sake of clarity (like other entities).

Environment

1. OS (where OpenCTI server runs): { e.g. Mac OS 10, Windows 10, Ubuntu 16.4, etc. }
2. OpenCTI version: { e.g. OpenCTI 1.0.2 }
3. OpenCTI client: { e.g. frontend or python }
4. Other environment details:

Reproducible Steps

Steps to create the smallest reproducible scenario:

1. go to artifact
2. click on the + to create
3. click on create
4. nothing happens

Expected Output

See an error message because I did not upload a file

Actual Output

Nothing happen

Additional information

Screenshots (optional)