Android Question I can't run the WobbleMenu and B4XPages example

[vascofire]

I get this error from the logs when I try to run this WobbleMenu and B4XPages example [B4X][XUI] WobbleMenu - a cross platform animated bottom navigation
What might be wrong?

Logger connected to: 127.0.0.1:62025

--------- beginning of system

--------- beginning of main

Copying updated assets files (1)

*** Service (starter) Create ***

** Service (starter) Start **

** Activity (main) Create, isFirst = true **

Error occurred on line: 94 (WobbleMenu)

java.lang.NumberFormatException: Invalid double: "null"

    at java.lang.StringToReal.invalidReal(StringToReal.java:63)

    at java.lang.StringToReal.initialParse(StringToReal.java:164)

    at java.lang.StringToReal.parseDouble(StringToReal.java:282)

    at java.lang.Double.parseDouble(Double.java:301)

    at anywheresoftware.b4a.BA.ObjectToNumber(BA.java:684)

    at b4a.example.wobblemenu._designercreateview(wobblemenu.java:1095)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    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 java.lang.reflect.Method.invoke(Method.java:372)

    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)

    at anywheresoftware.b4a.objects.CustomViewWrapper.AfterDesignerScript(CustomViewWrapper.java:61)

    at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:162)

    at anywheresoftware.b4a.objects.PanelWrapper.LoadLayout(PanelWrapper.java:134)

    at anywheresoftware.b4a.objects.B4XViewWrapper.LoadLayout(B4XViewWrapper.java:312)

    at b4a.example.b4xmainpage._b4xpage_created(b4xmainpage.java:58)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:318)

    at anywheresoftware.b4a.debug.Debug.CallSubNew2(Debug.java:285)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    at anywheresoftware.b4a.keywords.Common.CallSubDebug2(Common.java:1055)

    at b4a.example.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:1060)

    at b4a.example.b4xpagesmanager._showpage(b4xpagesmanager.java:417)

    at b4a.example.b4xpagesmanager._addpage(b4xpagesmanager.java:245)

    at b4a.example.b4xpagesmanager._addpageandcreate(b4xpagesmanager.java:259)

    at b4a.example.b4xpagesmanager._initialize(b4xpagesmanager.java:165)

    at b4a.example.main._activity_create(main.java:408)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    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 java.lang.reflect.Method.invoke(Method.java:372)

    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)

    at b4a.example.main.afterFirstLayout(main.java:105)

    at b4a.example.main.access$000(main.java:17)

    at b4a.example.main$WaitForLayout.run(main.java:83)

    at android.os.Handler.handleCallback(Handler.java:739)

    at android.os.Handler.dispatchMessage(Handler.java:95)

    at android.os.Looper.loop(Looper.java:135)

    at android.app.ActivityThread.main(ActivityThread.java:5305)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

** Activity (main) Resume **