Mongoose and Promise Error

[vigilanteRk]

Issue 1:
[0] (node:3752) UnhandledPromiseRejectionWarning: MongoNetworkError: connection 5 to cluster0-shard-00-02-bioze.mongodb.net:27017 closed
[0] at TLSSocket. (E:\Home\server\node_modules\mongodb-core\lib\connection\connection.js:352:9)
[0] at Object.onceWrapper (events.js:277:13)
[0] at TLSSocket.emit (events.js:189:13)
[0] at _handle.close (net.js:597:12)
[0] at TCP.done (_tls_wrap.js:388:7)
[0] (node:3752) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)

Issue 2:
[1] When specified, "proxy" in package.json must be a string.
[1] Instead, the type of "proxy" was "object".
[1] Either remove "proxy" from package.json, or make it a string.
[1] npm ERR! code ELIFECYCLE
npm ERR! errno 1
[1] npm ERR! [email protected] start: react-scripts start
[1] npm ERR! Exit status 1
[1] npm ERR!
npm ERR! Failed at the [email protected] start script.
[1] npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
[1]
[1] npm ERR! A complete log of this run can be found in:
[1] npm ERR! C:\Users\Samsung user\AppData\Roaming\npm-cache_logs\2019-06-11T06_44_18_943Z-debug.log
[1] npm ERR! code ELIFECYCLE
npm ERR! errno 1
[1] npm ERR! [email protected] client: npm run start --prefix client
[1] npm ERR! Exit status 1
[1] npm ERR!
[1] npm ERR! Failed at the [email protected] client script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
[1]
[1] npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Samsung user\AppData\Roaming\npm-cache_logs\2019-06-11T06_44_18_975Z-debug.log
[1] npm run client exited with code 1

I found a post on stackoverflow solution regarding the proxy issue, that says to create a separate setupProxy.js file and apply proxy in below way
const proxy = require('http-proxy-middleware');
module.exports = function(app) {
app.use(proxy('/auth/google',
{ target: 'http://localhost:5000' },
"/api/*", {
"target": "http://localhost:5000"
}
));
}
and delete the proxy from client/package.json,
But this remains a temprory solution, and often the error appears regular

Issue 3:
http://localhost:5000/api/current_user
the page remains totally blank, no current user is shown

[dhuang612]

first error white list your ip address from your mongodb cluster.
The setting is under security

Yes the setupProxy.js is the accepted solution. there is a text document update inside of the course

[vigilanteRk]

first error white list your ip address from your mongodb cluster.
The setting is under security

Yes the setupProxy.js is the accepted solution. there is a text document update inside of the course

Big THANKS:
It really worked.
But now I'm facing a problem in Heroku deployment, and heroku logs shows chunk of errors, and on heroku server it shows: Cannot GET /

[dhuang612]

can you post a screenshot of the errors Heroku is showing you?

[vigilanteRk]

can you post a screenshot of the errors Heroku is showing you?
Thanks for replly:

[dhuang612]

So I don't see the repo under your account, is it a private one?

I took a look at the error messages, it looks like something under the options to build out the create-react-app is failing