[Bug]: lost the last relationship in entity graph generate

[zhuyuemufeng]

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• [ ] I have searched the existing issues and this bug is not already filed.
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• [ ] I believe this is a legitimate bug, not just a question. If this is a question, please use the Discussions area.

Describe the bug

After obtaining entity information through LLM, {completion_delimiter} was not processed, resulting in an error in parsing the last relationship weight code(graph_extractor.py#_process_results):

Steps to reproduce

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Expected Behavior

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GraphRAG Config Used

# Paste your config here

Logs and screenshots

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Additional Information

• GraphRAG Version:
• Operating System:
• Python Version:
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