Update app.py

app.py

@@ -394,9 +394,19 @@ with st.sidebar:
             functions=molecule_custom_functions,
             function_call='auto'
         )
-        data = json.loads(response_functions.choices[0].message.function_call.arguments)
+        try:
+            arguments = response_functions.choices[0].message.function_call.arguments
+            if arguments is not None:
+                data = json.loads(arguments)
+            else:
+                data = {}  # or set to None or a default value as needed
+        except (IndexError, KeyError, TypeError) as e:
+            #print(f"Error accessing the data: {e}")
+            data = {}    
+            
+        #data = json.loads(response_functions.choices[0].message.function_call.arguments)
         if data:
-            molecule_name = data['molecule_name']
+            molecule_name = data['molecule_name','']
             if molecule_name:
                 response = requests.get(f"https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/{molecule_name}/cids/TXT")
                 cid = response.text