fixed problem with then catch chain (Promise)...

server/db/mongoose.js

@@ -14,13 +14,29 @@ var options = {
   // user: process.env.UDB,
   // pass: process.env.PDB,
   useMongoClient: true,
+  useNewUrlParser: true,
   promiseLibrary: require('bluebird')
+
+  // useCreateIndex: true,
+  // useFindAndModify: false,
+  // autoIndex: false, // Don't build indexes
+  // reconnectTries: Number.MAX_VALUE, // Never stop trying to reconnect
+  // reconnectInterval: 500, // Reconnect every 500ms
+  // poolSize: 10, // Maintain up to 10 socket connections
+  // // If not connected, return errors immediately rather than waiting for reconnect
+  // bufferMaxEntries: 0,
+  // connectTimeoutMS: 10000, // Give up initial connection after 10 seconds
+  // socketTimeoutMS: 45000, // Close sockets after 45 seconds of inactivity
+  // family: 4 // Use IPv4, skip trying IPv6
+
+  // keepAlive: true,                // keepAlive is true by default since mongoose 5.2.0
+  // keepAliveInitialDelay: 300000   // keepAliveInitialDelay is the number of milliseconds to wait before initiating keepAlive on the socket.
 };
 
 
 
 // mongoose.connect(process.env.MONGODB_URI + '?authSource=admin', { options })
-mongoose.connect(process.env.MONGODB_URI, { options })
+mongoose.connect(process.env.MONGODB_URI, options)
   .then(() =>
     console.log('connection succesful ' + process.env.MONGODB_URI + ' db: ' + process.env.DATABASE)
   )