You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
It just happened to me for the first time today. I discovered the problem, for me at least, was a chunk of ice that had formed in the recess for the locking pin in the handle of the mobile connector. I chipped it out and the error went away.