エラーコード
The following features required to run Godot projects on the Web are missing:
Cross Origin Isolation - Check web server configuration (send correct headers)
SharedArrayBuffer - Check web server configuration (send correct headers)解決方法
.htaccess に以下を追加してください。
Header set Cross-Origin-Embedder-Policy "require-corp"
Header set Cross-Origin-Opener-Policy "same-origin"