No block-level parent found. Not good.

[alexfleites]

I try to implement in my CI App and got this message any help would be appreciate it
Thank You in advance.

No block-level parent found. Not good.

public function pdf() {
//error_reporting(E_ALL^E_NOTICE^E_WARNING);
try {
//ob_start();
$html = $this->layout->view('reports/campaign', ['campaign_id'=>56], true);
//$html = ob_get_clean(); //die($html);
$this->html2pdf->folder('./tmp/');
$this->html2pdf->filename(uniqid().'.pdf');
$this->html2pdf->paper('letter', 'landscape');
$this->html2pdf->html($html);
$this->html2pdf->create('save');
} catch (\Exception $e) {
echo $e->getMessage();
}
}

[lilsizzo]

i found out that if u remove the newline in the html, it kinda solve this issue.