Run spoon.sh error in "Kettle" CRT

Installation complete kettle, start spoon.sh times wrong as follows:

[root@kettle data-integration]# ./spoon.sh                
org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed]
        at org.eclipse.swt.SWT.error(Unknown Source)
        at org.eclipse.swt.widgets.Display.createDisplay(Unknown Source)
        at org.eclipse.swt.widgets.Display.create(Unknown Source)
        at org.eclipse.swt.graphics.Device.<init>(Unknown Source)
        at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
        at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
        at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:610)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)

This is because the graphical interface is not the cause.

Workaround 1: Do not use the CRT, perform Xhost + in the terminal of the Linux interface, and then execute the spoon.sh

Workaround 2: Execute Xhost + in the terminal of the Linux interface, then execute spoon.sh in Xshell

Note: The CRT is not able to play a graphical interface.