GPG no key for encryption set error in PHP Laravel - development

GPG no key for encryption set error in PHP Laravel

I get the PHP Error output: no key for encryption set using GnuPG in Laravel.

My Controller:

public function showDecryptionForm()
{
  if(session()->has('user_name'))
  {
    $user_name = session()->get('user_name');
    $user_password = session()->get('user_password');
  }
  else
  {
    return redirect()->route('login');
  }
  $user_details = User::where('username',$user_name)->first();

  $secret = $this->generateSecretKey();

  $secret_hash = password_hash($secret, PASSWORD_BCRYPT);

  $this->secret_code = $secret_hash;

  //echo $user_details->pgp;

  putenv("GNUPGHOME =/home/user/.gnupg");
  $gpg = new gnupg();
  $key = $gpg->import($user_details->pgp);
  $gpg->addencryptkey($key['fingerprint']);
  $enc = $gpg->encrypt($secret);
  $gpg->clearencryptkeys();
  //echo '<textarea rows="30" class="form-control" name="pgp-msg">'.$enc.'</textarea>';

  session()->flash('secret_hash',$secret_hash);

  return view('auth.decryptionform',compact('enc','user_name','user_password'));
}
}

Whats the Error mean? The Key from Database or $gpg->addencryptkey?

I have generated with gpg an keypair and export the public.key with fingerprint in the /home/user/.gnupg folder. Are this Correct or must i do it on other way?

I am happy for any help.

Thanks……

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