Hi @shangshang_shi, you’re probably using functions that have been deprecated in the most recent versions of PennyLane.
My suggestion would be to try to update your code to work with our latest version. For this you can follow the following steps:
1 - Run your code and note down the functions that cause errors in your program
2 - Search for those functions in our Release Notes
3 - If you find in the release notes that the functions you’re using have been deprecated then update them according to the new recommended functions as stated in the release notes.
If you can’t find what is the new usage or if you have any trouble following these recommended steps then please copy-paste the following information here so that we can help you:
1 - Your full code
2 - The full error traceback
3 - The output of qml.about()