I just went online, deleted the app from my Bangle and reloaded it, and tested it. There were no problems. I wonder what happened to your installation.
Judging from your error messages, parts of the app are missing. Maybe try reinstalling it.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I just went online, deleted the app from my Bangle and reloaded it, and tested it. There were no problems. I wonder what happened to your installation.
Judging from your error messages, parts of the app are missing. Maybe try reinstalling it.