Dolphin Error "Could not enter folder tags:/"

I normally use dwm as the Windows manager on my laptop. However, I occationally need to switch to Plasma to test some applications out. This laptop is currently running Fedora 34 which has been upgraded from previous versions as old as 28, I believe.

When I run Dolphin, there is an annoying error message “Could ont enter folder tags:/”. Though it doesn’t cause any problems, it’s very annoying.

I found a solution from bug report #437176 suggesting to purge Baloo database. Here is the command to run:

$ balooctl purge

Note that this command should run by the user who’s experienced the above problem.

You can read more at:

• Bug 437176 - I keep getting a “Could not enter folder tags:/.” error dialog box (with this release).
• kf.kio.core: “Could not enter folder tags:/.”