Every time logging in, it notifies that "Touchegg is not installed" even when it has been uninstalled

Describe the bug

I have already uninstalled Touchegg. However, every time I log in, there is a notification titled "Touchegg is not install " reminding me that "Please install touchegg to enable multi-touch gesture". It seems that I did not uninstall Touchegg totally.

How to reproduce:

sudo apt install touchegg

and then unintall it by

sudo apt purge touchegg

Then use super+L to log out and then log in. ( Or reboot and log in)

Expected behaviour

There is not such a notification when I log in.

Actual behaviour

There is such a notification every time I log in.

Logs

The tail of "syslog" is as follows:

Feb 12 02:38:47 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Reconnecting to Touchégg daemon in 5 seconds
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Connecting to Touchégg daemon
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Error connecting to Touchégg daemon: Could not connect: Connection refused
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Reconnecting to Touchégg daemon in 5 seconds
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Connecting to Touchégg daemon
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Error connecting to Touchégg daemon: Could not connect: Connection refused
Feb 12 02:38:48 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Reconnecting to Touchégg daemon in 5 seconds
Feb 12 02:38:52 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Connecting to Touchégg daemon
Feb 12 02:38:52 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Error connecting to Touchégg daemon: Could not connect: Connection refused
Feb 12 02:38:52 yuan-Inspiron-5409 gnome-shell[1782]: [x11gestures@joseexposito.github.io] Reconnecting to Touchégg daemon in 5 seconds

I have already uninstalled Touchegg. So I cannot run the following command.

$ touchegg --debug

Additional information

$ sudo apt list --installed | grep touchegg 
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

which means I have actually uninstalled touchegg by apt.

Your environment

Version of Touchégg: Run touchegg --version in the terminal to check the version
Operating System: Ubuntu 22.04.1 LTS x86_64
Desktop Environment: GNOME 42.5
Are you using Wayland? No, I am using x11

What I tried

According to this post, I a) removed my Touchegg config file "~/.config/touchegg", b) and I ran "systemctl disable --now touchegg" (however got "Failed to disable unit: Unit file touchegg.service does not exist."), c) and finally checked my x11 related files in the home directory, which are ".xinitrc"(empty file) and ".xinputrc"(only one line "run_im fcitx5") However, these efforts did not fix the problem.

JoseExposito / touchegg