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Dify version

0.11.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

using question classifer node in workflow with bedrock claude model，when all configuration configured，alert as below：

✔️ Expected Behavior

classify question correctly

❌ Actual Behavior

[bedrock] Error: ValidationException: A conversation must alternate between user and assistant roles. Make sure the conversation alternates between user and assistant roles and try again.