Problems with SlayAnimationSample

Hi, Everyone. I noticed that Epic company launched a new project called “SlayAnimationSample” . I downloaded that project, waited for a long time, waiting to see what can I learn. But it seems there is some problems with the launching procedure. The progress bar stays in 75%, and “loading PreDefault Modules for Plugin: PythonScriptPlugin.”. then they have no response. Has anybody encountered such problem before?Thank you!