面临的问题：“试图获取非对象的属性'title'

Question

我想在与收入和支出表都连接的IncomeExpense表中显示收入名称和支出名称，并且这两个表都具有name列，可从中获取信息并将其显示在IncomeExpense表中。我已经正确连接了所有表，但是收到错误消息：“试图获取非对象的属性'title' 查看：

@extends('layouts.app')
@section('content')
<br>
<br>
    <div class="card bg-muted">
    <h1>{{$incexp->IncomeExpense}}</h1>
    <small>{{$incexp->created_at}}</small>
    <small> {{$incexp->income->title }}</small>**--get issue here**
    <small>{{$incexp->SumOfMoney}}</small>
    <small> {{$incexp->Comments}}</small>
    <small> {{$incexp->expense->title}}</small>**--get issue here**
    <small>Кем создан: <strong>{{$incexp->user->name}}</strong></small>

    </div>
    <br>
<a href="/incexp/{{$incexp->id}}/edit" class="btn btn-primary">Edit</a>

{!! Form::open(['action'=>['IncomeExpenseController@destroy', $incexp->id], 'method' =>'POST', 'class'=>'float-right']) !!}
    {{Form::hidden('_method', 'Delete')}}
    {{Form::submit('Delete', ['class'=>'btn btn-danger'])}}
{!! Form::close() !!}
@stop

收入支出模式：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class IncomeExpenses extends Model
{

    public function income(){
        return $this->belongsTo('App\Income');
    }
    public function expense(){
        return $this->belongsTo('App\Expenses');
    }

    public function user(){
        return $this->belongsTo('App\User');
    }

}

收入模型：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Income extends Model
{
    public function incomeExpense(){
        return $this->hasMany('App\IncomeExpenses');
    }
}

费用模式：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Expenses extends Model
{

    public function incomeExpense(){
        return $this->hasMany('App\IncomeExpenses');
    }
}