it appears that something wasn’t setup correctly:
Unable to parse Build/RobotPanicV1.1WEBGL.framework.js.br! This can happen if build compression was enabled but web server hosting the content was misconfigured to not serve the file with HTTP Response Header “Content-Encoding: br” present. Check browser Console and Devtools Network tab to debug.
the downloadable version is windows only and is incorrectly labeled with Linux and MacOS