Hello. We're using a Nintex workflow with a classic task approval form. We have many users who want to approve on their phones, but the users that have iPhones (iOS 11.4.1) get an error when pressing the "OK" button to approve the task. This happens in Chrome, Safari, and Edge. Android users can approve on their phones without issue. The error is shown below. Any help or guidance on this issue would be greatly appreciated!