- Plesk for Linux
WordPress instances, plugins and themes are not updated without any error message when selected all. Previously, there was a Smart Update license installed, which was removed later.
- #EXTWPTOOLK-2733 "Smart Updates: The system now properly notifies users when Smart Update skips a website for some reason during mass update operation."
- WordPress Toolkit 4.2.0 25 July 2019
If update is not possible for some reason you may try the following
As a workaround, update each WordPress instance separately.