When launching an app with "npx http-server", only one video is displayed

Description
I cloned the file from “GitHub - zoom/sample-app-videosdk: zoom videosdk web demo” and set dev.ts.
When I run “npm run start”, I see multiple videos.
However, when I run “npm run build” and then “npx http-server” in the build directory, only one video is displayed.
The above was done with Chrome (Version 96.0.4664.110 (Official Build) (arm64)).

Browser Console Error
Failed to load resource: the server responded with a status of 404 (Not Found)

Which Web Video SDK version?
1.1.7

Video SDK Code Snippets
I don’t know “Video SDK Code Snippets”.

Device (please complete the following information):

  • Device: MacBook Air (M1, 2020)
  • OS: macOS 12.0.1 (21A559)
  • Browser: Chrome
  • Browser Version 96.0.4664.110 (Official Build) (arm64)