Fix model & request for gps controller

server/models/User.js

@@ -55,11 +55,19 @@ const UserSchema = mongoose.Schema({
   password: String,
 
   // for GPS
+  profilePic:{
+    type:String,
+    default:"noPic"
+  },
   shopName:String,
   shopNumber:String,
   shopAddress:String,
   birthDate:String,
-  walletBalance:String,
+  walletBalance:{
+    type:Number,
+    min:0,
+    default:0
+  },
   cardBank:[BankSchema],