Android Question Running the sample B4A_B4XDrawer with these error. Any help?

[SHOLA KUKU]

Logger connected to: Infinix Infinix NOTE 3
--------- beginning of main
*** Service (starter) Create ***
--------- beginning of system
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
Error occurred on line: 228 (B4XDrawer)
<code>
227. Public Sub getCenterPanel As B4XView
228. Return mCenterPanel
229. End Sub
</Code>


java.lang.RuntimeException: java.lang.ClassNotFoundException: b4a.example.ACToolbarLightWrapper
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:170)
at anywheresoftware.b4a.objects.PanelWrapper.LoadLayout(PanelWrapper.java:134)
at anywheresoftware.b4a.objects.B4XViewWrapper.LoadLayout(B4XViewWrapper.java:292)
at b4a.example.main._activity_create(main.java:389)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at b4a.example.main.afterFirstLayout(main.java:104)
at b4a.example.main.access$000(main.java:17)
at b4a.example.main$WaitForLayout.run(main.java:82)
at android.os.Handler.handleCallback(Handler.java:836)
at android.os.Handler.dispatchMessage(Handler.java:103)

 

[kisoft]

What does this mistake give? Does the example published in this thread work well for you?
https://www.b4x.com/android/forum/threads/b4x-b4xdrawer-sliding-drawer.97828/
If the error occurred in your application, check this ACToolbarLightWrapper item and set its properties as in the example.