CentOS 7. Just installed the sauserprefs (version 1.17.1) plugin for Roundcube (version 1.3.8). The "Spam" tab is added OK. When I click on "Spam" tab, a page opens, where I can see the menu on the left side ("Section"), but nothing on the right side. When I try to click on the sections, I see that "General Settings" and "Bayes Settings" are causing the empty page on the right, other sections show some settings.
How do I fix this? Please help.