diff --git a/.env b/.env
index c3b28c2..74c3547 100644
--- a/.env
+++ b/.env
@@ -2,3 +2,4 @@ CLIENT_ID = your_client_id_here
 CLIENT_SECRET = your_client_secret_here
 SESSION_SECRET = 'your_session_secret_string_here'
 PORT = 9001
+TRUST_PROXY = 1
diff --git a/.env.development b/.env.development
index 912f800..49b4ed7 100644
--- a/.env.development
+++ b/.env.development
@@ -1,7 +1,6 @@
 REDIRECT_URI = http://localhost:9001/api/auth/callback
-TRUST_PROXY = 1
-PG_USER = your_postgres_username
-PG_PASSWD = your_postgres_password
-PG_DATABASE = postgres_database_name
-PG_HOST = localhost
-PG_PORT = postgres_instance_port
+DB_USER = your_database_username
+DB_PASSWD = your_database_password
+DB_NAME = your_database_name
+DB_HOST = localhost
+DB_PORT = your_database_port
diff --git a/.env.production b/.env.production
index c2892a6..136b72d 100644
--- a/.env.production
+++ b/.env.production
@@ -1,2 +1 @@
 REDIRECT_URI = https://domain.for.this.app/api/auth/callback
-TRUST_PROXY=1
diff --git a/.gitignore b/.gitignore
index f20e8ae..1976619 100644
--- a/.gitignore
+++ b/.gitignore
@@ -70,9 +70,7 @@ typings/
 
 # dotenv environment variables file
 .env.local
-.env.development.local
-.env.production.local
-.env.test.local
+.env.*.local
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache
diff --git a/boilerplates/route.js b/boilerplates/route.js
index 75ac8d8..95d4636 100644
--- a/boilerplates/route.js
+++ b/boilerplates/route.js
@@ -1,6 +1,6 @@
 const router = require('express').Router();
 
-const validator = require("../validators");
+const { validate } = require("../validators");
 
 router.get(
 
diff --git a/config/sequelize.js b/config/sequelize.js
index 54d2bec..a43c492 100644
--- a/config/sequelize.js
+++ b/config/sequelize.js
@@ -1,33 +1,28 @@
 const logger = require("../utils/logger")(module);
 
-let connConfigs = {
+const connConfigs = {
 	development: {
-		username: process.env.PG_USER,
-		password: process.env.PG_PASSWD,
-		database: process.env.PG_DATABASE,
-		host: process.env.PG_HOST,
-		port: process.env.PG_PORT,
+		username: process.env.DB_USER || 'postgres',
+		password: process.env.DB_PASSWD || '',
+		database: process.env.DB_NAME || 'postgres',
+		host: process.env.DB_HOST || '127.0.0.1',
+		port: process.env.DB_PORT || 5432,
 	},
-	test: {
-		username: process.env.PG_USER,
-		password: process.env.PG_PASSWD,
-		database: process.env.PG_DATABASE,
-		host: process.env.PG_HOST,
-		port: process.env.PG_PORT,
+	staging: {
+		use_env_variable: "DB_URL", // use connection string for non-dev env
 	},
 	production: {
-		username: process.env.PG_USER,
-		password: process.env.PG_PASSWD,
-		database: process.env.PG_DATABASE,
-		host: process.env.PG_HOST,
-		port: process.env.PG_PORT,
-	},
+		use_env_variable: "DB_URL", // use connection string for non-dev env
+		// dialectOptions: {
+		//   ssl: true,
+		// },
+	}
 }
 
 // common config
 for (const conf in connConfigs) {
 	connConfigs[conf]['logging'] = (msg) => logger.debug(msg);
-	connConfigs[conf]['dialect'] = 'postgres';
+	connConfigs[conf]['dialect'] = process.env.DB_DIALECT || 'postgres';
 }
 
-module.exports = connConfigs;
\ No newline at end of file
+module.exports = connConfigs;
diff --git a/constants.js b/constants.js
index 5ac49c6..5c36fc0 100644
--- a/constants.js
+++ b/constants.js
@@ -22,4 +22,4 @@ module.exports = {
 	sessionName,
 	stateKey,
 	scopes
-}
\ No newline at end of file
+};
diff --git a/index.js b/index.js
index 4d94ed7..abd7a33 100644
--- a/index.js
+++ b/index.js
@@ -7,10 +7,11 @@ const session = require("express-session");
 const cors = require('cors');
 const cookieParser = require('cookie-parser');
 const helmet = require("helmet");
-
 const SQLiteStore = require("connect-sqlite3")(session);
-const db = require("./models");
+
 const { sessionName } = require('./constants');
+const db = require("./models");
+
 const { isAuthenticated } = require('./middleware/authCheck');
 
 const logger = require("./utils/logger")(module);
@@ -40,12 +41,10 @@ app.use(session({
 }));
 
 app.use(cors());
-app.use(cookieParser());
-
-// Configure helmet
 app.use(helmet());
-app.disable('x-powered-by')
+app.disable('x-powered-by');
 
+app.use(cookieParser());
 app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
@@ -58,13 +57,15 @@ app.use("/api/playlists", isAuthenticated, require("./routes/playlists"));
 app.use("/api/operations", isAuthenticated, require("./routes/operations"));
 
 // Fallbacks
-app.use((_req, res) => {
-	return res.status(404).send(
+app.use((req, res) => {
+	res.status(404).send(
 		"Guess the <a href=\"https://github.com/20kaushik02/spotify-manager\">cat's</a> out of the bag!"
 	);
+	logger.info("Unrecognized URL", { url: req.url });
+	return;
 });
 
-const port = process.env.PORT || 3000;
+const port = process.env.PORT || 5000;
 
 const server = app.listen(port, () => {
 	logger.info(`App Listening on port ${port}`);
diff --git a/models/index.js b/models/index.js
index ef7de7a..ec69f22 100644
--- a/models/index.js
+++ b/models/index.js
@@ -2,14 +2,12 @@
 const fs = require("fs");
 const path = require("path");
 const Sequelize = require("sequelize");
-const typedefs = require("../typedefs");
 const logger = require("../utils/logger")(module);
 const basename = path.basename(__filename);
 const env = process.env.NODE_ENV || "development";
 const config = require(__dirname + "/../config/sequelize.js")[env];
 const db = {};
 
-/** @type {typedefs.Sequelize} */
 let sequelize;
 if (config.use_env_variable) {
 	sequelize = new Sequelize(process.env[config.use_env_variable], config);
@@ -48,4 +46,4 @@ Object.keys(db).forEach(modelName => {
 db.sequelize = sequelize;
 db.Sequelize = Sequelize;
 
-module.exports = db;
\ No newline at end of file
+module.exports = db;
diff --git a/package.json b/package.json
index 92db2e3..ee3d8b4 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "start": "node index.js",
-    "dev": "cross-env NODE_ENV=development nodemon index.js"
+    "dev": "cross-env NODE_ENV=development nodemon --exitcrash index.js"
   },
   "repository": {
     "type": "git",
diff --git a/typedefs.js b/typedefs.js
index 5ebe5e9..b7b1275 100644
--- a/typedefs.js
+++ b/typedefs.js
@@ -5,12 +5,6 @@
  * @typedef {import('express').Response} Res
  * @typedef {import('express').NextFunction} Next
  * 
- * @typedef {import("sequelize").Sequelize} Sequelize
- * @typedef {import("sequelize").Model} Model
- * @typedef {import("sequelize").QueryInterface} QueryInterface
- * 
- * @typedef {import('winston').Logger} Logger
- * 
  * @typedef {{
  * type: string,
  * is_local: boolean,
diff --git a/utils/jsonTransformer.js b/utils/jsonTransformer.js
index 16e3110..3f88461 100644
--- a/utils/jsonTransformer.js
+++ b/utils/jsonTransformer.js
@@ -1,10 +1,11 @@
 /**
- * Returns a single string of the values of all keys in the given JSON object, even nested ones.
+ * Stringifies only values of a JSON object, including nested ones
  * 
- * @param {*} obj 
+ * @param {any} obj JSON object
+ * @param {string} delimiter Delimiter of final string
  * @returns {string}
  */
-const getNestedValuesString = (obj) => {
+const getNestedValuesString = (obj, delimiter = ', ') => {
 	let values = [];
 	for (key in obj) {
 		if (typeof obj[key] !== "object") {
@@ -14,7 +15,7 @@ const getNestedValuesString = (obj) => {
 		}
 	}
 
-	return values.join();
+	return values.join(delimiter);
 }
 
 module.exports = {
diff --git a/utils/logger.js b/utils/logger.js
index 3b46dce..5030cff 100644
--- a/utils/logger.js
+++ b/utils/logger.js
@@ -1,7 +1,7 @@
 const path = require("path");
 
 const { createLogger, transports, config, format } = require('winston');
-const { colorize, combine, label, timestamp, printf, errors } = format;
+const { combine, label, timestamp, printf, errors } = format;
 
 const typedefs = require("../typedefs");
 
@@ -36,10 +36,9 @@ const logFormat = printf(({ level, message, label, timestamp, ...meta }) => {
 /**
  * Creates a curried function, and call it with the module in use to get logs with filename
  * @param {typedefs.Module} callingModule The module from which the logger is called
- * @returns {typedefs.Logger} 
  */
-const logger = (callingModule) => {
-    let tmpLogger = createLogger({
+const curriedLogger = (callingModule) => {
+    let winstonLogger = createLogger({
         levels: config.npm.levels,
         format: combine(
             errors({ stack: true }),
@@ -48,7 +47,7 @@ const logger = (callingModule) => {
             logFormat,
         ),
         transports: [
-            new transports.Console({ level: 'debug' }),
+            new transports.Console({ level: 'info' }),
             new transports.File({
                 filename: __dirname + '/../logs/debug.log',
                 level: 'debug',
@@ -57,12 +56,12 @@ const logger = (callingModule) => {
             new transports.File({
                 filename: __dirname + '/../logs/error.log',
                 level: 'error',
-                maxsize: 10485760,
+                maxsize: 1048576,
             }),
         ]
     });
-    tmpLogger.on('error', (error) => tmpLogger.crit("Error inside logger", { error }));
-    return tmpLogger;
+    winstonLogger.on('error', (error) => winstonLogger.error("Error inside logger", { error }));
+    return winstonLogger;
 }
 
-module.exports = logger;
\ No newline at end of file
+module.exports = curriedLogger;
diff --git a/validators/index.js b/validators/index.js
index 6d5d3b5..e889ebe 100644
--- a/validators/index.js
+++ b/validators/index.js
@@ -1,9 +1,10 @@
 const { validationResult } = require("express-validator");
 
-const typedefs = require("../typedefs");
 const { getNestedValuesString } = require("../utils/jsonTransformer");
 const logger = require("../utils/logger")(module);
 
+const typedefs = require("../typedefs");
+
 /**
  * Refer: https://stackoverflow.com/questions/58848625/access-messages-in-express-validator
  * 
@@ -16,10 +17,21 @@ const validate = (req, res, next) => {
 	if (errors.isEmpty()) {
 		return next();
 	}
-	const extractedErrors = []
-	errors.array().map(err => extractedErrors.push({
-		[err.path]: err.msg
-	}));
+
+	const extractedErrors = [];
+	errors.array().forEach(err => {
+		if (err.type === 'alternative') {
+			err.nestedErrors.forEach(nestedErr => {
+				extractedErrors.push({
+					[nestedErr.path]: nestedErr.msg
+				});
+			});
+		} else if (err.type === 'field') {
+			extractedErrors.push({
+				[err.path]: err.msg
+			});
+		}
+	});
 
 	res.status(400).json({
 		message: getNestedValuesString(extractedErrors),
@@ -31,4 +43,4 @@ const validate = (req, res, next) => {
 
 module.exports = {
 	validate
-}
\ No newline at end of file
+};