I bought a module from upwork.com. The module is about website payment with stripe gateway.

The module works fine in Chrome and IE browsers. But I didn't test in Firefox browser at that time.

After few days When I test it in Firefox, It cames with " 400:Bad Request ". And I asked the freelancer

to fix that problem, he promised would fix it, but no fix at all. So I come for help.

I found it seems be the Content Security Policy

Because in firefox debug console, it shows: Content Security Policy: Directive 'frame-src' has been deprecated. Please use directive 'child-src' instead.

To see the error, please use this account to login.

website:    www.mary19.com

username: test

password: passme

Thanks in advance.