Postman sending request hanging - mongodb

Question

I am new to Postman. I am unsure of why my postman is hanging when trying to get from "http://localhost:8001/application/cards". It's supposed to respond with an empty array but it just keeps sending request. It works for "http://localhost:8001" to which it does give me "Hello World!" but doesn't work when I add /application/cards. Is there new syntax update? I can give more information about my code if necessary.
...
const app = express();
const port = process.env.PORT || 8001;
...
app.use(express.json());
app.use(Cors());
mongoose.connect(connection_url, {
useNewUrlParser: true,
useCreateIndex: true,
useUnifiedTopology: true,
});
app.get('/', (req, res) => res.status(200).send('Hello World!'));
app.post('/application/cards', (req, res) => {
const dbapplication = req.body;
Cards.create(dbapplication, (err, data) => {
if (err)
{
res.status(500).send(err);
}
else
{
res.status(201).send(data);
}
});
});
app.get('/application/cards', (req, res) => {
Cards.find((err, data) => {
if (err)
{
res.status(500).send(err);
}
else
{
res.status(200).send(data);
}
});
});
Note: /application/cards in my question was an example, but SpartanSwipe is actually my application.
Upon testing data using POST http://localhost:8001/application/cards, I got a 500 Internal Server Error after about 10 seconds.
[
{
"name": "Test Name",
"profPic": "https://as1.ftcdn.net/v2/jpg/01/17/42/38/500_F_117423860_bApe5ResfiVkO0G0UlUjUVNpAtFUWYYy.jpg"
},
{
"name": "Nest Tame",
"profPic": "https://thumbs.dreamstime.com/z/happy-university-college-student-thumbs-up-15010463.jpg"
}
]
Here is my database .js for the cards
import mongoose from 'mongoose';
const cardSchema = mongoose.Schema({
name: String,
profPic: String
});
export default mongoose.model('cards', cardSchema);

Answer 1

Assuming your DB Connection is ok?? I think your issue lies in the structure of your code. According to the mongoose documentation, your first parameter should be an empty object followed by the callback to return all records like the example given below.
Cards.find((err, data) => {
if (err)
{
res.status(500).send(err);
}
else
{
res.status(200).send(data);
}
});
Example
Cards.find({}, (err, docs) => {
if (err) {
res.status(500).send(err);
}
res.status(200).send(docs);
});