changes

src/models/tankers.js

@@ -16,8 +16,8 @@ const tankersSchema = new mongoose.Schema({
     tankerName: { type: String, default: null },
     phoneNumber: { type: String, default: null },
     alternative_phoneNumber: { type: String, default: null },
-    typeofwater: [{ typeofwater: String}],
-    price:[{ price: String}],
+    typeofwater: { type: String, default: null },
+    price:{ type: String, default: null },
     capacity: { type: String},
     supplier_address: { type: String, default: null },
     supplier_name : { type: String, default: null },