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Fix Ollama tool calling crash when system prompt is None #41

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Merged
colinfrisch merged 1 commit into from
Dec 17, 2025
+2 −4
Merged

Fix Ollama tool calling crash when system prompt is None #41

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6 changes: 2 additions & 4 deletions mesa_llm/module_llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,10 +77,8 @@ def get_messages(self, prompt: str | list[str]) -> list[dict]:
"""
messages = []

# Always include a system message. If no prompt provided, set content to None regardless of system_prompt
system_content = (
None if not prompt else (self.system_prompt if self.system_prompt else None)
)
# Always include a system message. Default to empty string if no system prompt to support Ollama
system_content = self.system_prompt if self.system_prompt else ""
messages.append({"role": "system", "content": system_content})

if prompt:
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