Make CF7 to Mailjet work again [2022]

A new update on the plugin “Mailjet for WordPress” break”CF7 to Mailjet”.
Here is the fix:

Line 344 of cf7_to_mailjet.php

//$mailjet = new \MailjetPlugin\Includes\MailjetApi();
$mailjet = new \MailjetWp\MailjetPlugin\Includes\MailjetApi();