I am having a problem when I assign DOI’s to articles. (OJS 18.104.22.168)
Whenever I go to add a DOI to the article (Edit Metadata), the page takes a lot of time to load and eventually the error page opens - “500 Internal Server Error - Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.”.
However, in the morning time I am able to assign DOI’s without the error coming, it still takes the same amount of time to load though.
Please give me solutions to fix this problem, whether the problem is in the code or somewhere else. I do not want the error to come back again.