I sometimes get a popup when copying to clipboard with a disable button which, when I press it, brings up the following message.

Plasma
"You can enable URL actions later by left-clicking on the Klipper icon and selecting 'Enable Clipboard Actions'

I want it to stop doing this! Any help? Thanks.

Operating System: KDE neon 5.20
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-59-generic
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520

This has been driving me nuts, but I finally figured out how to stop the actions popup completely.

Open Klipper settings (right-click on the Klipper icon in your tray and click on settings). In the General tab where it says "Timeout for action popups" select "0".

It isn't exactly disabled, but it won't show any more.