Idk if this will work, but may as well try

structures/PostgreSQL.js

@@ -0,0 +1,23 @@
+const Sequelize = require('sequelize');
+
+const database = new Sequelize(process.env.DB_URL, { logging: false });
+
+class Database {
+	static get db() {
+		return database;
+	}
+
+	start() {
+		database.authenticate()
+			.then(() => console.log('Connection to database has been established successfully.'))
+			.then(() => console.log('Synchronizing database...'))
+			.then(() => database.sync()
+				.then(() => console.log('Synchronizing database done!'))
+				.catch(error => console.error(`Error synchronizing the database: ${error}`))
+			)
+			.then(() => console.log('Ready to rock!'))
+			.catch(err => console.error(`Unable to connect to the database: ${err}`));
+	}
+}
+
+module.exports = Database;