Cannot send mail with no "From" header.

Hello.

I am using Codeigniter 3 and when i try to send email i get this error
Cannot send mail with no "From" header.
But the email still sends i got them in my mail.

But when i use condition

Code:

if (!$this->email->send())
{
 echo $this->email->print_debugger();
}

It says that cannot send mail with no "From" header but the email stil sends.

My preferences are located in the config/email.php
Here is my code.

     

Code:

$this->load->library('email');
$this->email->from('[email protected]');
$this->email->reply_to('[email protected]');
$this->email->to('[email protected]');
$this->email->subject($this->input->post('emailheading'));
$this->email->message($this->input->post('emailmessage'));
$this->email->set_alt_message($this->input->post('emailmessage'));
$this->email->send();

 if (!$this->email->send())
{    
echo $this->email->print_debugger();
                
}

Any help will be appreciated