Similar to the linked issue, pet_substitutions fails in pet_substitutions if the language code has not been provided -- despite being an optional parameter. The linked issue (now closed and marked as fixed) does not fix the issue.
Call pet_send_one_mail with a pet email and params like the following:
$pet_email = get_pet_email_somehow();
$params = [
'pet_from' => 'email@email.com',
'pet_to' => 'email@email.com',
'pet_nid' => 'id',
'pet_uid' => 'uid'
];
pet_send_one_mail($pet_email, $params);
This will fail with a message like so:
Error: Call to a member function getId() on null in pet_substitutions() (line 311 of /app/web/modules/contrib/pet/pet.module).
Ensure the language parameter is provided pet_substitutions is called.
Needs review
4.3
Code
@dineshkumarbollu Thanks for the patch!
Please remove the commented code // $langcode = $params['language']->getId();. Additionally, consider raising a merge request as it facilitates easier review and further development.