made changes tankersschema in tankers.js

src/controllers/tankersController.js

@@ -32,7 +32,6 @@ console.log(req.params);
     };
    
 
-
     var tanker_Name = req.body.tankerName
     var i_tank = await Tanker.findOne({ tankerName: tanker_Name})
     if(i_tank){

src/models/tankers.js

@@ -14,8 +14,9 @@ const tankersSchema = new mongoose.Schema({
 
     tankerName: { type: String, default: null },
     phoneNumber: { type: String, default: null },
-    typeofwater: { type: String, default: null },
+ 
-    capacity: { type: String, default: null },
+    typeofwater: [{ type: String, default: null }],
+    capacity: [{ type: String, default: null }],
 });
 
 const tankersbookingSchema = new mongoose.Schema({