Avast for Mac Free appears to be blocking access to my Google Drive docs

[system]

Getting
Access to doc-0k-30-docs.googleusercontent.com was denied

You don’t have authorization to view this page.
HTTP ERROR 403

This only happened after installing Avast.
How do I disable this?

[Asyn]

→ https://forum.avast.com/index.php?board=5.0