How to findAll in mongoosejs?

const result = await SiteModel.find() - Without the {} in the .find() function works as well.

The 2017 Node 8.5 way

try {
  const results = await SiteModel.find({});
  console.log(results);
} catch (err) {
  throw err;
}

Try this code to debug:

SiteModel.find({}, function(err, docs) {
    if (!err) { 
        console.log(docs);
        process.exit();
    }
    else {
        throw err;
    }
});

From the documentation:

let result = SiteModel.find({}, function (err, docs) {});

or using async await you can do like this also:

let result = await SiteModel.find({});