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ComponentDialog::BuildDialogState throws NullReferenceException

See original GitHub issue


SDK 4.19 .NET 7

Describe the bug

BuildDialogState throws NullReferenceException (in line if (state.DialogStack == null) Dialog isn’t properly restored in line state = instance.State[PersistedDialogState] as DialogState;, although instance object is set properly, and State seems to be proper JObject. It looks like deserialization goes wrong. Issue appears only after upgrade to 4.19, on 4.18.1 no exception is thrown.

To Reproduce

In my bot:

  1. Conversation is initiated
  2. First dialogstack is built
  3. Response to user is sent.
  4. User sends message
  5. On rebuilding stack exception is thrown

Expected behavior

DialogState is properly rebuilt

Issue Analytics

  • State:closed
  • Created 8 months ago
  • Comments:10 (6 by maintainers)

github_iconTop GitHub Comments

anishprasad01commented, Feb 15, 2023

Fix merged, will be live in the next patch release.

anishprasad01commented, Jan 20, 2023

Thank you both for that information. I will attempt to repro with Cosmos for state.

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