Apparently Phaser link is not working anymore in the game example. However, there is a community edition that seems to work. Below you can find the link to the working version.
It may be also about lack of the "https:" part in the original link. This may also work -> <script src="https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js"></script>
Apparently Phaser link is not working anymore in the game example. However, there is a community edition that seems to work. Below you can find the link to the working version.
<script src="https://cdn.jsdelivr.net/npm/phaser-ce@2.19.2"></script>