Fall back to reasoning content when LLM message content is None#278
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claude-fable-5 returns its answer in the reasoning/thinking content with no separate text block, so litellm sets message.content to None and the strict str assertion crashed every forecast. Fall back to reasoning content when content is None, and include the finish reason in the assertion message for easier diagnosis of genuinely empty responses. Co-authored-by: Cursor <cursoragent@cursor.com>
CodexVeritas
approved these changes
Jun 10, 2026
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claude-fable-5 returns its answer in the reasoning/thinking content with no separate text block, so litellm sets message.content to None and the strict str assertion crashed every forecast. Fall back to reasoning content when content is None, and include the finish reason in the assertion message for easier diagnosis of empty responses.