I have this template which captures clipboard content in file. It works 
fine when emacsclient is running, but if no client is running then 
server adds empty entry.

(add-to-list 'org-capture-templates
        '("x" "Clips" entry (file+headline "/home/user/desktop/clips" 
"Clips")
          "** %x" :immediate-finish t :prepend t))


*System:* 5.10.16-arch1-1
*Desktop Environment:* xfce
*GNU Emacs 27.1*