Add set_verbose true to debug errors on chatlitellm

Author: rogeriochaves

evaluators/ragas/langevals_ragas/lib/model_to_langchain.py

@@ -15,6 +15,8 @@ def model_to_langchain(model: str) -> BaseChatModel:
     if model.startswith("claude-"):
         model = model.replace("claude-", "anthropic/claude-")
 
+    litellm.set_verbose = True  # type: ignore
+
     return ChatLiteLLM(model=model, client=litellm.completion)