优化Web事件代码

backend/app/api/routers/request/models.py

@@ -1,7 +1,7 @@
 
 from typing import Dict, Any
 from pydantic import BaseModel
-
+from typing import Optional
 
 class ChatRequestData(BaseModel):
     inputs: Dict[str,Any]
@@ -12,4 +12,6 @@ class ChatRequestData(BaseModel):
     conversation_id: str = None
 
 class ChatFileUploadRequest(BaseModel):
-    base64: str
+    base64: str
+
+