If you cannot access the learningBOX due to security restrictions, set the whitelist below.
The URL specified by us is as follows.--------------------------------------------------
https://quizgenerator.net/
https://*.quizgenerator.net/
https://d11752705kdcd6.cloudfront.net/
https://cdn.quizgenerator.net/
https://media-cdn.quizgenerator.net/
https://cdnjs.cloudflare.com/
Port number: 80,443
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Change the settings of the firewall etc. so that you can connect to the list of URLs specified by us.