Hi Jared!
I’m sorry to know that you are having that issue. Let me help you with the troubleshooting.
First, please make sure you are using the latest versions of our plugins. Remember you can always download our plugins from your downloads page > https://theeventscalendar.com/my-account/downloads/
We always suggest to setup a dev/staging site so you can test things out and make all plugins, theme and WordPress core updates without disrupting the live site.
If you still experience the same error for that import, please share with us the gCal URL where you are trying to import events from so we can run some tests on our end.
Thanks,
Victor