Crash when creating VM

[Aszusz]

Describe the bug
A crash when saving new server configuration

To Reproduce
Steps to reproduce the behavior:

1. Create a new server
2. Provide all the details
3. Click on save

Expected behavior
No crash

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Windows 11
• Version 0.10.1

Additional context

[2024-06-20 11:36:48][FATAL][Genesis/Source/genesis/application/GenesisApplication.hx:557] Fatal exception : Null Object Reference
Details : Exception: Null Object Reference
Called from openfl.display.DisplayObject.__dispatchWithCapture (openfl/display/DisplayObject.hx line 1461)
Called from openfl.display.DisplayObjectContainer.removeChild (openfl/display/DisplayObjectContainer.hx line 450)
Called from feathers.controls.LayoutGroup._removeChild (feathers/controls/LayoutGroup.hx line 346)
Called from feathers.controls.LayoutGroup.removeChild (feathers/controls/LayoutGroup.hx line 319)
Called from feathers.controls.LayoutGroup.removeChildAt (feathers/controls/LayoutGroup.hx line 352)
Called from feathers.controls.LayoutGroup.removeChildren (feathers/controls/LayoutGroup.hx line 407)
Called from genesis.application.components.Toast._removeToast (genesis/application/components/Toast.hx line 80)
Called from Reflect.callMethod (C:\hostedtoolcache\windows\haxe\4.3.4\x64\std/cpp/_std/Reflect.hx line 63)
Called from motion.actuators.GenericActuator.complete (motion/actuators/GenericActuator.hx line 155)
Called from motion.actuators.SimpleActuator.update (motion/actuators/SimpleActuator.hx line 559)
Called from motion.actuators.SimpleActuator.stage_onEnterFrame (motion/actuators/SimpleActuator.hx line 638)
Called from openfl.events.EventDispatcher.__dispatchEvent (openfl/events/EventDispatcher.hx line 426)
Called from openfl.display.DisplayObject.__dispatch (openfl/display/DisplayObject.hx line 1398)
Called from openfl.display.Stage.__broadcastEvent (openfl/display/Stage.hx line 1187)
Called from openfl.display.Stage.__onLimeRender (openfl/display/Stage.hx line 2177)
Called from lime.app._Event_lime_graphics_RenderContext_Void.dispatch (lime/_internal/macros/EventMacro.hx line 91)
Called from lime._internal.backend.native.NativeApplication.handleRenderEvent (lime/_internal/backend/native/NativeApplication.hx line 375)
Called from lime._internal.backend.native.NativeApplication.exec (lime/_internal/backend/native/NativeApplication.hx line 146)
Called from lime.app.Application.exec (lime/app/Application.hx line 150)
Called from openfl.display.Application.exec (openfl/display/Application.hx line 130)
Called from ApplicationMain.create (ApplicationMain.hx line 142)
Native : null
Stack : null

When you save a server there is UI "toast" that informs you server configuration was saved. There's removeToast method in the call stack and I thing this may be good starting point for investigation.

May also be related to: #105