Missing Plug-in error while placing dashboard web clip widget on the desktop

Hi before updating my macOS to 10.13.6 I was able to use the next command: > defaults write com.apple.dashboard devmode YES to **drag my safari web clip widgets from Dashboard to my desktop**, but after I updated the OS version to High Sierra I face the error after a widget is placed on the desktop doesn't appear and I see the **error** right in the center of the **empty widget** which had been placed on the desktop: > Missing Plug-in despite the dashboard widgets such as Clock and Calendar display on the desktop perfectly. I googled about it but found nothing and can't guess what's wrong. But I found that this feature of placing widgets from Dashboard to desktop works well with the same OS version which I use (High Sierra, 10.13.6.). I guess something wrong with my OS / Safari. I can't update my OS right now so I would be appreciated for advice about how to fix this without updating my OS to the latest. Safari version: 13.0.3 (no updates available in AppStore for my OS version. What I tried which did not help: write com.apple.dashboard devmode NO write com.apple.dashboard devmode YES killall Dock reboot One of the web clips in the Dashboard is very important for me so I'd like to see it on my desktop again. Thanks for your help!