In mailjet.module file we have a hooks: mailjet_user_insert(), mailjet_user_update(), mailjet_user_delete(), which are triggers syncMailjetContact(). The problem is syncMailjetContact() function made a POST request to the Mailjet API to update user info, and sometimes these requests can fail, generating a WSOD error on the website.
Error message:
GuzzleHttp\Exception\ConnectException: cURL error 28: Connection timeout after 2000 ms (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) in GuzzleHttp\Handler\CurlFactory::createRejection() (line 200 of /var/www/html/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php).
Create, update, or delete a user on the website. But this error appears from time to time.
Instead of making requests to the Mailjet API when the user was updated, created, or removed, we can add it to the queue and process all of them during the cron run.
Fixed
3.0
Code
Automatically closed - issue fixed for 2 weeks with no activity.