The WebGL seems to have an issue loading. It may be an issue with the Compression (just for future reference). See here for possible ways to resolve (https://tilcode.blog/2020/11/28/how-to-submit-an-unity-game-in-webgl-format-to-i...):
Go to Unity > File > Build Settings > Player Settings > Compression.
Option 1) There disable Compression, and enable Decompression Fallback.
Option 2) If the previous doesn’t work, select GZIP compression and enable Decompression Fallback.