When creating a new account or changing the order status we get error 500 on mail.php. We send emails by mail jet SMTP and testing of the email send works fine.
When replying to a customer message that a time occurs this type of error.
Steps to reproduce the behaviour:
1. Create a new account
2. Change order status to one that sends an email
3. Reply to customer messages.
When Change order status to one that sends an email or replies to customer message.
When creating a new account:
> This issue occurred due to the php-intl extension. please try to install it, it is required.
> If you aren’t able to do this please contact your service provider.
> You have to make sure that “extension=php_intl.dll” is enabled in php.ini.
> This extension is available on the php.ini file.