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fix: resolve UnboundLocalError by initializing assistant_message #1334

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fix: resolve UnboundLocalError by initializing assistant_message #1334

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4193f28
fix: resolve UnboundLocalError by initializing assistant_message
ParasSondhi Apr 5, 2026
a3a321e
Merge branch 'main' into fix-stream-unbound-local
ParasSondhi Apr 7, 2026
bd93968
Merge branch 'main' into fix-stream-unbound-local
ParasSondhi Apr 20, 2026
f73f8f9
Merge branch 'main' into fix-stream-unbound-local
ParasSondhi Apr 21, 2026
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11 changes: 8 additions & 3 deletions src/agent.py
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Original file line number Diff line number Diff line change
Expand Up @@ -801,6 +801,8 @@ async def async_langflow_chat_stream(
yield chunk

# Add the complete assistant response to message history with response_id, timestamp, and function call data
assistant_message = None # 1. Initialize here

if full_response:
assistant_message = {
"role": "assistant",
Expand All @@ -810,10 +812,13 @@ async def async_langflow_chat_stream(
"chunks": collected_chunks, # Store complete chunk data for function calls
"error": error_occurred, # Mark if this was an error response
}

# 2. Safety check before appending
if assistant_message is not None:
# Store usage data if available (from response.completed event)
if usage_data:
assistant_message["response_data"] = {"usage": usage_data}
conversation_state["messages"].append(assistant_message)
if usage_data:
assistant_message["response_data"] = {"usage": usage_data}
conversation_state["messages"].append(assistant_message)

# Store the conversation thread with its response_id
if response_id:
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