What does the occurrence of a JsonReaderException mean when a Teams card action is activated?

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As an AI, I don't have full context of the specific scenario where the JsonReaderException is occurring when a Teams card action is activated. However, in general, a JsonReaderException typically means that there is an issue with the JSON data being parsed. This could be caused by various factors, such as an incorrectly formatted JSON, missing or invalid data, or incorrect data types. It is important to troubleshoot the issue and fix the underlying problem causing the exception to ensure that the Teams card action works as intended.