fix: anthropic messages empty raise errors (#1893)

2024-01-03 22:12:14 +08:00
parent 91ee62d1ab
commit 6333cf43a8
1 changed files with 3 additions and 0 deletions
--- a/api/core/model_runtime/model_providers/anthropic/llm/llm.py
+++ b/api/core/model_runtime/model_providers/anthropic/llm/llm.py
@@ -252,6 +252,9 @@ class AnthropicLargeLanguageModel(LargeLanguageModel):
        :param messages: List of PromptMessage to combine.
        :return: Combined string with necessary human_prompt and ai_prompt tags.
        """
+        if not messages:
+            return ''
+
        messages = messages.copy()  # don't mutate the original list
        if not isinstance(messages[-1], AssistantPromptMessage):
            messages.append(AssistantPromptMessage(content=""))