Catalyst Functions : 500 Error
In order to be deployed in Catalyst, the Node.js application must follow a certain code structure. This issue might occur if the code structure for the same is not followed. You can find the sample code structure for all Catalyst functions here.
For Example : If your function is Advanced IO and you have used express framework, then you need to add module.exports=app; at the end of your function. Here app is the variable of express framework.