Update tools/final_answer.py

tools/final_answer.py

@@ -8,13 +8,13 @@ class FinalAnswerTool(Tool):
     name = "final_answer"
     description = "Provides a final answer to the given problem. Can include a textual response and/or a path to a generated image."
     
-    # CORRECTED: Use 'string' instead of 'str' for type
+    # CORRECTED: Add "nullable": True for both 'text' and 'image_path'
     inputs = {
-        'text': {'type': 'string', 'description': 'The final textual answer to the problem'},
-        'image_path': {'type': 'string', 'description': 'Optional path to a generated image file (e.g., .webp, .png, .jpg) to be displayed.'}
+        'text': {'type': 'string', 'description': 'The final textual answer to the problem', 'nullable': True},
+        'image_path': {'type': 'string', 'description': 'Optional path to a generated image file (e.g., .webp, .png, .jpg) to be displayed.', 'nullable': True}
     }
     
-    output_type = "string" # Output will be a Markdown string, so 'string' is appropriate
+    output_type = "string" # Output will be a Markdown string
 
     def forward(self, text: Optional[str] = None, image_path: Optional[str] = None) -> str:
         """
@@ -49,6 +49,7 @@ class FinalAnswerTool(Tool):
             output_content.append(text)
         
         if not output_content:
+            # If both are None, provide a default message
             return "No final answer provided."
 
         return "\n\n".join(output_content)