Call to a member function getError() on array

[arogachev]

What steps will reproduce the problem?

Submit contact form.

What is the expected result?

Form submitted successfully.

What do you get instead?

Call to a member function getError() on array

https://github.com/yiisoft/demo/blob/3d6ca817d4efd08a4acf1a3a93521422c5764421/src/Contact/ContactMailer.php#L57

Additional info

Q	A
Version	current master
PHP version	https://github.com/yiisoft/demo/blob/3d6ca817d4efd08a4acf1a3a93521422c5764421/docker-compose.yml#L5
Operating system	https://github.com/yiisoft/demo/blob/3d6ca817d4efd08a4acf1a3a93521422c5764421/docker-compose.yml#L5