Hi @elenfoxx, This is because you don’t’ have the python module named ‘grove/i2c’, and you can install it with the grove py package.
You can install the latest grove.py by
curl -sL https://github.com/Seeed-Studio/grove.py/raw/master/install.sh | sudo bash -s -
After installing the grove.py can you try to run your code, if you still have the error, please share the code and error log. Thanks 