This happens to me too sometimes, is it when a popup opens or when you click a button?
Try refreshing your screen or shutting down/restarting your device.
Related post:
As it says in the error screen, try emailing hello@gimkit.com, it’s the email address of gimkit’s employees/devs.
You might want to explain what happened and what’s your account info and map name so they can look into it.
It’ll take ~a few days so please be patient, the devs actually have a life so they won’t respond immediately (unlike us)