如何解決過濾數據表中的錯誤「oTable.draw不是函數」？

我在數據表上方有一個搜索表單。當我嘗試搜索時，我以JSON格式顯示數據，而不是過濾數據表。該錯誤是如何解決過濾數據表中的錯誤「oTable.draw不是函數」？

Uncaught TypeError: oTable.draw is not a function

這裏是JavaScript：

$(document).ready(function(){ 
    var oTable = $('#surat').DataTable({ 
     processing: true, 
     serverSide: true, 
     ajax: { 
      url: '{!! route("surat") !!}', 
      data: function (d) { 
       d.jenis_surat = $('input[name=jenis_surat]').val(); 
       d.nomor_surat = $('input[name=nomor_surat]').val(); 
       d.perihal = $('input[name=perihal]').val(); 
      } 
     }, 
     columns: [ 
      {data: 'no', name: 'no'}, 
      {data: 'jenis_surat', name: 'jenis_surat'}, 
      {data: 'nomor_surat', name: 'nomor_surat'}, 
      {data: 'perihal', name: 'perihal'}, 
      {data: 'status', name: 'status'} 
     ] 
    }); 

    $('#search_form').on('submit', function(e) { 
     oTable.draw(); 
     e.preventDefault(); 
    }); 
    });

這是控制器：

public function carisuratdata(Request $request) 
{ 
    $surats = Surat::select(['id_surat', 'id_jenis_surat', 'nomor_surat','perihal', 'tanggal_surat', 'masa_berlaku_from', 'masa_berlaku_to', 'ringkasan', 'tag', 'id_publish', 'tanggal_publish'])->get(); 

    return Datatables::of($surats) 
     ->filter(function ($instance) use ($request) { 
      if ($request->has('jenis_surat')) { 
       $instance->collection = $instance->collection->filter(function ($row) use ($request) { 
        return Str::contains($row['jenis_surat'], $request->get('jenis_surat')) ? true : false; 
       }); 
      } 

      if ($request->has('nomor_surat')) { 
       $instance->collection = $instance->collection->filter(function ($row) use ($request) { 
        return Str::contains($row['nomor_surat'], $request->get('nomor_surat')) ? true : false; 
       }); 
      } 
      if ($request->has('perihal')) { 
       $instance->collection = $instance->collection->filter(function ($row) use ($request) { 
        return Str::contains($row['perihal'], $request->get('perihal')) ? true : false; 
       }); 
      } 
     }) 

     ->make(true); 

}

這裏是JSON：