@piyush try installing with npm after opening a terminal in your nodebb folder.npm install nodebb-plugin-whitelist-email-domains
then go to plugin page and activate it, rebuild and restart.
Plugin I am using : nodebb-plugin-katex
Oops! Looks like something went wrong!
Failed to lookup view "admin/plugins/katex" in views directory "/home/sub-dir/public_html/subdire/NodeBB/build/public/templates"
Did you rebuild assets after installing it? There is a "rebuild and restart" button in ACP.
Thanks a lot , it worked !!