Error after enabling CSP

[w1157972377]

Prerequisites

• [] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• The issue still exists against the latest master branch of bootstrap-fileinput.
• This is not an usage question. I confirm having read the plugin documentation and demos.
• This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
• I have attempted to find the simplest possible steps to reproduce the issue.
• I have included a failing test as a pull request (Optional).

Steps to reproduce the issue

Expected behavior and actual behavior

When I follow those steps, I see...

I was expecting...

Environment

Browsers

• [Y] Google Chrome
• Mozilla Firefox
• Internet Explorer
• Safari

Operating System

• [Y] Windows
• Mac OS X
• Linux
• Mobile

Libraries

• jQuery version: 3.7.1
• bootstrap-fileinput version: 5.5.4

Isolating the problem

• [] This bug happens on the plugin demos page
• The bug happens consistently across all tested browsers
• This bug happens when using bootstrap-fileinput without other plugins
• I can reproduce this bug in a jsbin

[w1157972377]