Issue

An application that runs as expected locally, fails to load on when the application is deployed on the Mendix Cloud. When opening the app, the user will only see a white page. The following log line can be found: 

Connector: 404 - file not found for file: mxclientsystem/dojox/main.js

Environment

Applications hosted in Mendix Cloud

Cause

A widget in the project relies on the dojox library. This library causes an issue when the application is deployed to the Mendix Cloud, as that library is not supported anymore. 

Solution/Workaround

The widget relying on dojox needs to be removed from the project. To find the widget relying on the dojox library, create a deployment package locally and search through created widgets.js using the keyword dojox.