Laravel: DB::transaction() in try catch not working - mysql

Question

I am using manual DB transactions in my controller.
public function exportUsers(){
DB::beginTransaction();
try{
$data = new \App\Models\User();
$excelData = $data->getMemberData();
$reportGeneratedOn = date('dMY');
$report_file_name = 'All_Members_'.$reportGeneratedOn.'.xls';
DB::table('settings')->where('id',1)->update(['user_export_status_id'=>2]);
$excelHTML = view('administrator.member.excel',compact('excelData'))->render();
$reader = new \PhpOffice\PhpSpreadsheet\Reader\Html();
$spreadsheet = $reader->loadFromString($excelHTML);
$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xls');
$fileName = md5('allmembers_'. microtime()).".xls";
$path = storage_path('app/temp/');
$writer->save( $path . $fileName );
$excel_file_content = file_get_contents( $path . $fileName );
$data = $this->S3Upload($fileName , env('S3_MEMBERS_EXPORT_PATH'), env('S3_MEMBERS_EXPORT_URL'), $excel_file_content,$report_file_name );
if ( $data['status'] ){
DB::table('settings')->where('id',1)->update(['user_export_status_id'=>3]);
DB::table('settings')->where('id',1)->update(['user_export_path'=>$data['preSignedUrl']]);
if( is_file($path . $fileName) ) {
#unlink( $path . $fileName );
}
}
DB::commit();
return response()->json(['error' => 0, 'code' => 200, 'message' => 'Please download the generated excel.','status'=>3, 'report_url' => $data['preSignedUrl']], 200);
}
catch(\Exception $e){
DB::rollBack();
return response()->json(['error' => 1, 'code' => 200, 'message' => 'An error occured while generating the report.'.$e->getMessage().' : '.$e->getFile().'-'.$e->getLine()], 200);
}
}
But using this I got an error like below
Error : An error occured while generating the report.DOMDocument::loadHTML(): htmlParseEntityRef: no name in Entity, line: 2855 :
C:\wamp64\www\O2X\Trunk\Web\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Reader\Html.php-619
My database has a user_export_status_id field which at first has value 1..When an export starts it get updated as 2. But after I got error, it is not roll backed to 1. Dataabse still has value 2.