Description of issue or problem I’m having: I am using the lastest version of OJS 3.3.0.8. In the past few days, I succeeded in activating plugins from “installed plugins” and installing plugins from the plugin gallery. But yesterday, when I tried installing more interesting plugins again, it shows…

Hi @bluecover You must update in your server the package ca-certificates. If your server has CentOS or a derivate you can use the command in console yum update ca-certificates If you server is based on Debian the console command is apt-get install --only-upgrade ca-certificates