add requiretment

app.py

@@ -41,7 +41,7 @@ def greet(name1, name2, name3, name4):
                 if line.startswith("Location:"):
                     return line.split(":")[1].strip()
         except:
-            return None
+            return 'not found'
 
     package_name = "ontogpt" # Replace this with any package name
     location = get_package_location(package_name)