I cant access as an "user" on MongoDB - node.js

Question

This is my issue, I can access to MongoDB as an admin, but when I switch to “user” I can't, and it shows a message like this: msg: "You are not an admin!", even though I switched to 'user', this is and screenshot on MongoDB:
MongoDB, please click to see the image
This is a screenshot of the app message error:
Flutter app, please click to see the image
This is my code:
admin.js
const jwt = require("jsonwebtoken"); const User = require("../models/user");
const admin = async (req, res, next) => { try {
const token = req.header("x-auth-token");
if (!token)
return res.status(401).json({ msg: "No auth token, access denied" });
const verified = jwt.verify(token, "passwordKey");
if (!verified)
return res
.status(401)
.json({ msg: "Token verification failed, authorization denied." });
const user = await User.findById(verified.id);
if (user.type == "user" || user.type == "seller") {
return res.status(401).json({ msg: "You are not an admin!" });
}
req.user = verified.id;
req.token = token;
next(); } catch (err) {
res.status(500).json({ error: err.message }); } };
module.exports = admin;
admin_services.dart
class AdminServices {
void sellProduct({
required BuildContext context,
required String name,
required String description,
required double price,
required double quantity,
required String category,
required List<File> images,
}) async {
final userProvider = Provider.of<UserProvider>(context, listen: false);
try {
final cloudinary = CloudinaryPublic('blur', 'blur');
List<String> imageUrls = [];
for (int i = 0; i < images.length; i++) {
CloudinaryResponse res = await cloudinary
.uploadFile(CloudinaryFile.fromFile(images[i].path, folder: name));
imageUrls.add(res.secureUrl);
}
Product product = Product(
name: name,
description: description,
quantity: quantity,
images: imageUrls,
category: category,
price: price,
);
http.Response res = await http.post(
Uri.parse('$uri/admin/add-product'),
headers: {
'Content-Type': 'application/json; charset=UTF-8',
'x-auth-token': userProvider.user.token,
},
body: product.toJson(),
);
httpErrorHandle(
response: res,
context: context,
onSuccess: () {
showSnackBar(context, 'Product added successfully');
Navigator.pop(context);
},
);
} catch (e) {
showSnackBar(context, e.toString());
}
}
Future<List<Product>> fetchAllProducts(BuildContext context) async {
final userProvider = Provider.of<UserProvider>(context, listen: false);
List<Product> productList = [];
try {
http.Response res = await http.get(
Uri.parse('$uri/admnin/get-products'),
headers: {
'Content-Type': 'application/json; charset=UTF-8',
'x-auth-token': userProvider.user.token,
},
);
httpErrorHandle(
response: res,
context: context,
onSuccess: () {
for (int i = 0; i < jsonDecode(res.body).length; i++) {
productList.add(
Product.fromJson(
jsonEncode(
jsonDecode(res.body)[i],
),
),
);
}
});
} catch (e) {
showSnackBar(context, e.toString());
}
return productList;
}
void deleteProduct(
{required BuildContext context,
required Product product,
required VoidCallback onSuccess}) async {
final userProvider = Provider.of<UserProvider>(context, listen: false);
try {
http.Response res = await http.post(
Uri.parse('$uri/admnin/delete-product'),
headers: {
'Content-Type': 'application/json; charset=UTF-8',
'x-auth-token': userProvider.user.token,
},
body: jsonEncode(
{
'id': product.id,
},
),
);
httpErrorHandle(
response: res,
context: context,
onSuccess: () {
onSuccess();
},
);
} catch (e) {
showSnackBar(context, e.toString());
}
}
}
Hope you can help me, thanks for your attention