#3 Feb 17, 2019 22:07
It gets fixed after a while, but we are concerned as sometimes this error comes up in peak hour when most students/faculty are browsing our educational journal.
You can ask your hosting to increase max_user_connections and either they will or they will suggest you upgrade to a higher plan.
Bottom line is that it the limit set by your webhost and in busy times, your site is exceeding that limit. Some hosts set it as low as 10 or 25 for their economy plans.