傳遞給 Maatwebsite\Excel\Excel::download() 的參數(shù) 2 必須是字符串類型，給定的對(duì)象，在 C:\xampp\htdocs\student_route\vendor\laravel\framework\src\Illuminate\Support\Facades\Facade 中調(diào)用第 237 行的 .phppublic function excel_report()    {     $student_data = DB::table('student_details')->get()->toArray();     $student_array[] = array('Name', 'Address', 'Roll No', 'Class');     foreach($student_data as $student)     {      $student_array[] = array(       'Student Name'  => $student->st_name,       'Address'   => $student->address,       'Roll No'   => $student->roll_no,       'Class'    => $student->st_class      );     }     Excel::download('Student_Data', function($excel) use ($student_array){      $excel->setTitle('Student Datas');      $excel->sheet('Student_Datass', function($sheet) use ($student_array){       $sheet->fromArray($student_array, null, 'A1', false, false);      });     })->download('xlsx');    }我收到錯(cuò)誤參數(shù) 2 傳遞給 Maatwebsite\Excel\Excel::download() must be of the type string, object given.不知道問題出在哪里。任何人請(qǐng)檢查。我正在使用 Laravel 5.8