Adblockers are known to cause this error message. We recommend disabling any adblockers and then seeing if you're able to still reproduce this.
A common workaround is to use a plugin to detect the adblocker, and then prompt users to disable it. This will help ensure that the plugin does work and doesn't throw the error.
Other users have been able to use the 'unhandled error' events to see if the error contains Ipify and then run a different workflow.