Glib-gio: Error: gdbusconnection. C: 2270: initable_init: assertion failed: (connection-& G

On the GNOME Desktop running Terminal, directly switch the su to the root, and run some graphic interface commands on the terminalProgram. It may be because the environment variables used by root are the environment variables of common users using the su command after the su command is directly switched to root.

[Root @ localhost bin] #./qtcreator
**
Glib-gio: Error: gdbusconnection. C: 2270: initable_init: assertion failed: (connection-> initialization_error = NULL)
Aborted (core dumped)

Solution:
UseSu- Command to switch to root

The "-" parameter indicates that Su enables a login shell instead of a non-login shell)
In this way, the root reads the environment variable of the root user, instead of inheriting the environment variable of the user who entered the su command.