Mupx deployed the app but app doesn't show images rendered from imagemagik

What is the best way to see if imagemagik is working once my app is uploaded? I am using digitalocean and mupx. How do I check the logs files?

I am getting

Error in method “/cfs/files/:value/:value/:value/”, Error: TypeError: Cannot read property ‘audios’ of undefined
at Object.httpGetHandler (packages/cfs_access-point/packages/cfs_access-point.js:357:1)
at Object.accessPoint.get (packages/cfs_access-point/packages/cfs_access-point.js:675:1)
at packages/cfs_http-methods/packages/cfs_http-methods.js:582:1