Column not found: 1054 Unknown column 'image' in 'field list'

  public function up()
    {

      Schema::table('posts', function (Blueprint $table) {
          $table->string('image')->nullable()->after('updated_at');
      });

      $images = DB::table('images');

      $count = $images->count();

      $j = ceil($count / 1000);

      for($i = 1; $i <= $j; $i++ )

      {
        $data = $images->limit($i * 1000)->get()->pluck('image', 'news_id');

        foreach ($data as $id => $val) {

          DB::table('posts')->where('id', $id)->update(['image' => $val]);

        }
      }