fix bug

theagent.py

@@ -109,6 +109,7 @@ class BasicAgent:
 
         manager_agent = CodeAgent(
             tools=[SpeechToTextTool(), ExecutePythonTool()],
+            #tools=[ExecutePythonTool()],
             model=model,
             managed_agents=[web_agent, excel_summarizer_agent],
             additional_authorized_imports=["time", "numpy", "pandas", "os"],
@@ -123,11 +124,12 @@ class BasicAgent:
                 return v
 
         images = []
-        for k, v in attachment.items():
-            if v.endswith(".png") or v.endswith(".jpg"):
-                image_content = Image.open(v).convert("RGB")
-                images = [image_content]
-                attachment = None
+        if attachment:
+            for k, v in attachment.items():
+                if v.endswith(".png") or v.endswith(".jpg"):
+                    image_content = Image.open(v).convert("RGB")
+                    images = [image_content]
+                    attachment = None
         answer = self.agent.run(
             question
             + " Please break down the questions into easier sub-tasks."