[SOLVED] Can't uninstall packages from pamac-manager

Trying to uninstall vivaldi from pamac-manager gives target not found: vivaldi. And terminal gives this error.

(pamac-manager:14896): GLib-GIO-WARNING **: 12:40:17.144: unable to send notifications through org.freedesktop.Notifications: GDBus.Error:org.freedesktop.Notifications.Error.ExcessNotificationGeneration: Created too many similar notifications in quick succession

Oh, sorry it is solved. One 'lib' package is displaying Warning at a time of update. I reinstall that package and restart and that working.