Unfortunately, it won't complete loading and I can't play.
If your Unity development version was 2020.3.0f1 LTS, then this might be a problem with Unity. I have had the same problem.
To work around this issue, it may help to upload it again as a standalone version, or set your Unity version to 2019.4.22f1 LTS. However, it may be difficult to lower the IDE version.