Refactor code, split routes, change url in backend and update in frontend. Still have bugs, infinite loading after signup?

backend/routes/product.js

@@ -0,0 +1,10 @@
+const express = require("express");
+const { addToFavorite, getAllProducts } = require("../controllers/product");
+
+const router = express.Router();
+
+router.post("/add_fav_product", addToFavorite);
+
+router.get("/get_product", getAllProducts);
+
+module.exports = router;

backend/routes/user.js

@@ -0,0 +1,35 @@
+const express = require("express");
+const {
+  sendVerificationCode,
+  verifyCode,
+  completeSignUp,
+  getAllUser,
+  findUserByEmail,
+  updateUser,
+  deleteUser,
+} = require("../controllers/user");
+
+const router = express.Router();
+
+// Generate and send verification code for signup
+router.post("/send-verification", sendVerificationCode);
+
+// Verify the code
+router.post("/verify-code", verifyCode);
+
+// Create a users and Complete user registration after verification
+router.post("/complete-signup", completeSignUp);
+
+//Fetch all users data:
+router.get("/fetch_all_users", getAllUser);
+
+//Fetch One user Data with all fields:
+router.post("/find_user", findUserByEmail);
+
+//Update A uses Data:
+router.post("/update", updateUser);
+
+//Delete A uses Data:
+router.post("/delete", deleteUser);
+
+module.exports = router;