We would be pleased to help but to do so we need to have some idea of the problem.

Please provide details of the issue.

Sorry, I now realise there is a very small screen capture (almost invisible on a mobile). I do not know why the error exists, but can you check your hosting has at least php7.1?

Can you also advise if this email was previously working, perhaps before an update?

Hi Josef, 

please contact your hosting provider and, as Esahc suggested, please make sure at least PHP 7.1 is active. 

Please let me know if there is anything else we can do for you. Kind regards.

Please the information provided is not complete... What kind of problem do you have with the email section of your server or setting up your software.? Regards.