UNSOLVED Blank screen - Uncaught SyntaxError: Invalid or unexpected token

[chris1971]

Hi guys,
this norning my mirror was black. With npm start dev I see this problem:

Uncaught SyntaxError: Invalid or unexpected token
main.js:450 Initializing MagicMirror.
translator.js:1 Uncaught SyntaxError: Invalid or unexpected token
at Object.init (main.js:452)
at main.js:580

Any idea?
Thanks, Chris