We recently adapt the comparability of the plugin and tested to not crash during usage. I will try to send up maybe a quick patch but I don't have the deployment of it.
The series has two patches but I mean the interesting one is the one in this email
When will a version for Gerrit v3.13 (including this fix) be available in a pre-compiled jar file at https://gerrit-ci.gerritforge.com/? The "master" version there is about 3 months old.