I have had many times situation that servers were not properly configured since neither administrators nor journal editorial boards were fully ready and aware what is required to set up in order to meet the needs for some specific journal. It is always good to learn more about such error although they can happen but without tragic consequences for your work. Error 500 is one of so-called HTTP status codes. The error messages/status codes that begin with “5” indicate cases in which the server is not capable to perform some task. That task should be possible to be performed by the server if some settings could be adjusted. So, that is it. Nothing is ruined!
Constructive and open communication with hosting company or your administrator will help to identify possible cause of error which will disappear when some setting will be changed. The most often you will see so called Error 500 Internal Server Error which is generic error indicating that unexpected condition was encountered. No, big deal although does not look nice. Heh!
Appearance of that message can be expected but prior to entering any deal about web hosting plan detailed conversation with experienced administrator who will help you to precisely articulate your technical requirements that should be met by your IT department or hosting company. That is it! Some experimentation will not ruin anything on your server!