Update app.py

app.py

@@ -159,10 +159,13 @@ def application(callfunctions, callarguments):
 def process_input(input_str):
     if not input_str:
         return "No input provided!"
-    model_out = to_model(input_str)
-    funs, args = to_app(model_out)
-    output_obj = application(funs, args)
-    return output_obj
+    try:
+        model_out = to_model(input_str)
+        funs, args = to_app(model_out)
+        output_obj = application(funs, args)
+        return output_obj
+    except Exception as e:
+        retrun f"Error: {str(e)}"
 
 def respond(
     message,