[Solved] Identify the error in this LangGraph code snippet:flow.add_node(HumanNode('feedback')) flow.add_node(AINode(name='process')) flow.add_edge('feedback', 'process') | LangChain

LangChain - LangGraph for Stateful Agents

Identify the error in this LangGraph code snippet:

flow.add_node(HumanNode('feedback'))
flow.add_node(AINode(name='process'))
flow.add_edge('feedback', 'process')

AHumanNode missing named argument 'name'

BAINode missing required parameters

CEdge direction is reversed

DNodes are added in wrong order

Step-by-Step Solution

Solution:

Step 1: Check HumanNode instantiation
HumanNode requires a named argument 'name', but only a positional string is given.
Step 2: Verify other nodes and edges
AINode is correctly instantiated; edge direction is valid; node order is flexible.
Final Answer:
HumanNode missing named argument 'name' -> Option A
Quick Check:
HumanNode needs name= argument [OK]

Quick Trick: Always use name='...' when creating HumanNode [OK]

Common Mistakes:

MISTAKES

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