Server: Import from Excel, should not allow for blank entity name and continue to "create app"

[alonram]

Describe the bug
When importing from Excel and creating a new entity, the entity name left blank and gives an error when trying to generate the app.

To Reproduce
Upload file from Excel
Create a new entity
Move fields around from original entity to the new one.
Click "Create App" button on low right corner.
You get an error "The entity name and plural display name cannot be the same"

Expected behavior
Not to be able to continue with blank entity name. Prompt the user to enter a valid entity name

Windows 10 Chrome