Error: A file name must be specified.
    at Bucket.file (/srv/node_modules/@google-cloud/storage/build/src/bucket.js:1289:19)
    at Object.download (/srv/library/connections/googlestorage.js:6:25)
    at /srv/routes/secure.js:9:17
    at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)
    at next (/srv/node_modules/express/lib/router/route.js:137:13)
    at Route.dispatch (/srv/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/srv/node_modules/express/lib/router/layer.js:95:5)
    at /srv/node_modules/express/lib/router/index.js:281:22
    at param (/srv/node_modules/express/lib/router/index.js:354:14)
    at param (/srv/node_modules/express/lib/router/index.js:365:14)