fix error unfollow

Author: KurosakiAki

src/controllers/User.js

@@ -219,18 +219,17 @@ function UserController() {
 	this.unfollowSharkWallet = async (req, res, next) => {
 		let { userId, sharkId } = req.body;
 
-		if (!userId) userId = null;
+		if (!userId || _.isEmpty(userId)) userId = null;
 		else {
 			if (isNaN(userId)) userId = undefined;
 			else userId = Number(userId);
 		}
 
-		if (!sharkId) sharkId = null;
+		if (!sharkId || _.isEmpty(sharkId)) sharkId = null;
 		else {
 			if (isNaN(sharkId)) sharkId = undefined;
 			else sharkId = Number(sharkId);
 		}
-
 		await unfollowWalletOfShark(userId, sharkId)
 			.then((data) => {
 				if (data.message === "success")

src/services/crud-database/user.js

@@ -239,8 +239,8 @@ const followWalletOfShark = async (userId, sharkId) => {
 
 const unfollowWalletOfShark = async (userId, sharkId) => {
 	try {
-		if (userId === null) return "userid-required";
-		if (userId === undefined) return "userid-invalid";
+		if (userId === null) return { message: "userid-required"};
+		if (userId === undefined) return { message: "userid-invalid"};
 		if (sharkId === null) return { message: "sharkid-required" };
 		if (sharkId === undefined) return { message: "sharkid-invalid" };