Change node modules used by meteor

How can I change the node modules that meteor itself is using? My app is crashing after being deployed and the log I’m getting is

/bundle/bundle/programs/server/node_modules/fibers/future.js:313
						throw(ex);
						^
[object Object]

not great. I don’t have any fibers module. It’s coming from meteor. How can I edit this module to print more verbose information?