错误说尝试读取null上名称。当我尝试

<td>{{ $respondent->household_heads->name }}</td>

字符串
在我的respondent表中，我有一个外键household_id，其中包含respondent所属的household_head。
下面是我的household_heads模式：

Schema::create('household_heads', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->timestamps();
        });

型

受访者方案：

Schema::create('respondents', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->unsignedBigInteger('household_id');
            $table->timestamps();

            $table->foreign('household_id')->references('id')->on('household_heads');
        });

型

HouseholdHead型号：

class HouseholdHead extends Model
{
    use HasFactory;
    protected $fillable = [];

    public function respondent(){
        return $this->hasOne(Respondent::class);
    }

}

型

受访者模型

class Respondent extends Model
{
    use HasFactory;

    use HasFactory;
    protected $fillable = [];

    public function household_heads(){
        return $this->belongsTo(HouseholdHead::class);
    }
}

型

household_head表：

的数据

受访者表：

的

控制器：

public function index()
{
     
    $respondents = Respondent::with('household_heads')->get();
    return view('map', compact('respondents'));

    

}

型

table.blade.php：

@foreach ($respondents as $respondent)
         <tr>
            <td> {{$respondent->name}} </td>
                              
            <td>{{ $respondent->household_heads->name   }}</td>

          </tr>
@endforeach

型
我想在table.blade.php上显示我的受访者所属的table.blade.php中的household_head名称