gulp serve ends with syntax error

[ngKisor]

gulp serve ends with a syntax error on node modules/keypress/index.js with an invalid number
events.js:163
throw er; // Unhandled 'error' event
^
SyntaxError: /home/kisor/OnGoingProjects/hotspot/hotspot_api/server/node_modules/keypress/index.js: Invalid number (374:30)
372 | var s = key.sequence;
373 | var b = s.charCodeAt(3);

374 | key.x = s.charCodeAt(4) - 040;
| ^
375 | key.y = s.charCodeAt(5) - 040;
376 |
377 | key.scroll = 0;