I am using OJS 3.0.2 for our journal hosting (http://amphysiol.com) with defaultManuscript theme.
Recently I have installed trendMD (https://www.trendmd.com/) plugin for OJS 3.x. After enabling the plugin, I am not able to save the code snippet in setting. Web browser console is showing the following error
Failed to load resource: http://amphysiol.com/index.php/amp/$$$call$$$/grid/settings/plugins/settings-plugin-grid/manage?category=generic&plugin=trendmdplugin&verb=settings&save=1 the server responded with a status of 403 (Forbidden)
A screen cast of the process is available at google drive.
Any help in this regard.