laravel 5 belongsToMany Error after composer update

I am getting error after composer update

QueryException in Connection.php line 636: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'war_id' in 'where clause'

I have 3 tables in many to many relationship

1. wars table

id - int pk

2. locations table

id - int pk

3. war_locations table

id - int pk
war_id int
location_id int

war_locations table is pivot table.

I have declared relation ship in model

War.php

public function locations()
{
    return $this->belongsToMany('App\Models\Location', 'war_locations', 'war_id', 'location_id');
}

But when i try to get location of a war then it fails.

$wars = War::with('locations')->where('status',1)->get();

It was working before composer update

via Chebli Mohamed