@elextr Which distro version are you using? If your distro doesn't have libsoup3, then it probably does not have a version of webkitgtk that gets security updates. :(
[For Ubuntu](https://launchpad.net/ubuntu/+source/geany-plugins/2.0-4ubuntu1) (click the diff link), I wrote a simple patch to switch Markdown to webkitgtk 4.1, added the proposed webhelper webkit 4.1 patch, and disabled the other 2 plugins.