Account-Base Module Autorun Issue

Hello,

We are upgrading our Meteor project 1.5 to 1.8, everything works fine on our dev env. However, when we deploy the app to our test web server, we would get the following error.

Uncaught TypeError: o.autorun is not a function
at 9b232d56cd5fbffaca6764dfc6a215c45e61c385.js?meteor_js_resource=true:formatted:21374
at 9b232d56cd5fbffaca6764dfc6a215c45e61c385.js?meteor_js_resource=true:formatted:21378
at 9b232d56cd5fbffaca6764dfc6a215c45e61c385.js?meteor_js_resource=true:formatted:21380
at 9b232d56cd5fbffaca6764dfc6a215c45e61c385.js?meteor_js_resource=true:formatted:21382

The error is from Account-Base module, Meteor.autorun is not a function. How can I fix this?