Hi Ryan,
I’m sorry that you’re running into this issue, but I’ll be happy to help you get it figured out.
First, from your system info, it looks like you’re running older versions of The Events Calendar (4.6.9) and Events Calendar Pro (4.4.20). Can you try updating to the current versions (4.6.14.1 and 4.4.25 respectively) and see if you’re still getting this error? I would also recommend updating Event Tickets and Event Tickets Plus, which are both at 4.7.2. Please make sure to clear out any caching that you might be doing (such as on your server or via a plugin). If you don’t see a prompt to update in the Plugins section of your Dashboard, you can do so manually by following these instructions.
If you’re still running into this issue, the next step would be to run through these steps to test for any conflicts that might be occurring with your theme or another plugin.
Please let me know what you find!
Thanks,
Jennifer