How do I change the default file manager from the terminal? 2

Hello, how do I change the default file manager from the terminal? I am using default XFCE 4.14 and in this unsolved topic i have not found any working solution.

$ xdg-mime default dolphin.desktop inode/directory
$ xdg-mime default dolphin.desktop inode/directory application
$ xdg-mime query default inode/directory
doublecmd.desktop

and GUI mime editor also shows doublecmd

$ for file in $(locate mimeapps.list);do grep -i double $file;done
$ for file in $(locate mimeapps.list);do grep -i dolphin $file;done
application=dolphin.desktop
inode/directory=dolphin.desktop

:confused:

when i click to open something in new folder in some app, then it launch unwanted double commander and other app opens Thunar, but not Dolphin which i want as default.

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