php - Failed to open stream: HTTP request failed!? -


i need here, http request failed error give me lot of headache. try in local server , online server still didn't work, trying export table data .pdf or .xls format. controller.

public function export() {     $format = input::query('type');     $filename = carbon::now()->format('ymd_') . "productslist";     $file = excel::create($filename, function ($excel) {          $excel->sheet('product cost , amount', function ($sheet) {             $sheet->setfittopage(0);             $sheet->setfittowidth(0);             $sheet->setfittoheight(0);             $sheet->freezefirstrowandcolumn();             $sheet->setorientation('landscape');             $products = $this->report->getproductlevels();             $sheet->loadview('reports.product_report.product_level_report', compact('products'));          });          $excel->sheet('product locations', function ($sheet) {             $sheet->setfittopage(0);             $sheet->setfittowidth(0);             $sheet->setfittoheight(0);             $sheet->freezefirstrowandcolumn();             $products = $this->report->getproductlevels();             $sheet->loadview('reports.product_report.product_warehouse_level', compact('products'));          });       });

this views

<html> {{ html::style('dist/css/table.css') }} <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <body> <!-- headings --> <thead> <tr>     <th>#</th>     <th>product name</th>     <th>amount</th>     <th>reorder amount</th>     <th>unit cost</th>     <th>selling cost</th>     <th>tax rate</th>     <th>category</th> </tr> </thead> <?php $i = 1; ?> @foreach($products $product)     <tr>         <td scope="row">{{$i}}</td>         <td><b>{{$product->productname}}</b></td>         <td>{{$product->amount}}</td>         <td>{{$product->reorderamount}}</td>         <td>{{$product->unitcost}}</td>         <td>{{$product->sellingcost}}</td>         <td>{{$product->producttaxrate}}%</td>         <td>{{$product->categoryname}}</td>     </tr>     <?php $i++; ?> @endforeach </body> </html>

i'm stuck in few hours , still can't solve this. i'm glad if willing me, thank attention


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