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What is the World Access Failed 4216 error code?

The 4216 error that occurs during World play occurs when there is an error in the server code you created.

  • Please try to find the error in your onCreate / onJoin / onLeave or Message Event and fix it.
  • It is recommended to use Nullable or try-catch syntax to resolve issues with code stability and exception handling.

Please check the caveats for writing server code.

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Please refer to the following guide [Precautions when using server code]