BadMethodCallException：调用未定义的方法 - laravel php

I get the below error when i run my application.In my model, there is a function called texts() but still i'm getting the below error. What is the cause of this problem? When i remove the Foreach loop below

`@foreach ($data->fill_texts as $t)
  <div>{{$t->text}} ({{$answer->text_count}})</div>
@endforeach` 

It works fine with out any error.

BadMethodCallException: Call to undefined method Illuminate\Database\Query\Builder::texts()

Template Model

  public function texts() {
    return $this->hasMany(Text::class);
  }

  public function fill_texts() 
  {    
    return $this->select('text', DB::raw('count(*) as text_count'))->texts()->groupBy('text')->get();  
  }

Text Model

 protected $table = 'text';


    public function template() {
      return $this->belongsTo(Template::class);
    }

View

  @forelse ($doc->templates as $data)
  @foreach ($data->fill_texts as $t)
      <div>{{$t->text}} ({{$answer->text_count}})</div>
    @endforeach
    @endforelse