"internal server error" when adding status history on order page

Hi, I have a problem with my Opencart, I installed a fresh Opencart (Version 3.0.3 . (three.zero.three.eight) on my dedicated server (PHP 7.4), when I'm going to add a status history on the order page (admin side) "SOME TIME" I ger an error message (Internal Server Error) and no notification email sent. this problem appears sometimes not all time. I mean sometimes the notification goes without any problem. (the same problem "SOME TIME" apperas when a customer made an order as the email confirmation is sent to the customer when he makes an order).

I use the SMTP setting on Opencart Settings.

can you help to solve this problem?

Thank you!

Look at your SERVER error logs - something should show up there.
Possibly a mail server availability / problem

mikeinterserv wrote: ↑

Thu Jan 27, 2022 10:12 pm

Look at your SERVER error logs - something should show up there.
Possibly a mail server availability / problem

When the problem getting the logs look like:

/var/log/exim_rejectlog
/var/log/maillog /var/log/lfd.log

SMTP issue, which smtp setting you are using, if it's your own domain check with your host.
Your exima server is causing issues.