Trouble with a relationship

I am getting an error that suggests a problem with a relationship. the error: Relationship method must return an object of type. How do i fix this?

I have two tables - Batsmen : id, name, countries_id - Country: id, name

my relationship:

Batsmen model:

 public function countries(){
        $this->belongsTo('App\Country','countries_id');
    }

Country model:

 public function batsmen(){
        $this->hasMany('App\Batsmen');
    }

I am trying to get the country name to show on a batsmens profile with

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