Unexpected Disconnect

[Zayvi]

Describe the bug
Sorry, I'm having a very late night, the bug seems to be an unexpected disconnection - while the machine is very much still connected?

To Reproduce
Steps to reproduce the behavior:

1. Run cutting as normal,
2. Have this error pop up randomly and tell you to report the below to the developers

Expected behavior
I expected the cutting to happen without interruption

Screenshots

Hardware and software configuration (please complete the following information):
LaserGrbl v7.14.1.0
Grbl v1.1f
Wrapper: UsbSerial
Win 10, Professional, 10.0.19045.0 (7)
CLR: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll 4.8.4084.0 built by: NET48REL1

TypeOf exception [System.ArgumentOutOfRangeException]
Exception message [Value of '2059' is not valid for 'Value'. 'Value' should be between 'minimum' and 'maximum'.
Parameter name: Value]
Exception source [System.Windows.Forms], thread [Main Thread]
Exception method [Void set_Value(Int32)]

----------- stack trace -----------
at System.Windows.Forms.ProgressBar.set_Value(Int32 value)
at LaserGRBL.MainForm.TimerUpdate() in E:\LaserGRBL\LaserGRBL\MainForm.cs:line 567
at LaserGRBL.MainForm.OnMachineStatus() in E:\LaserGRBL\LaserGRBL\MainForm.cs:line 404
at LaserGRBL.GrblCore.RiseMachineStatusChanged() in E:\LaserGRBL\LaserGRBL\Core\GrblCore.cs:line 612
at LaserGRBL.GrblCore.SetStatus(MacStatus newStatus) in E:\LaserGRBL\LaserGRBL\Core\GrblCore.cs:line 516
at LaserGRBL.GrblCore.OpenCom() in E:\LaserGRBL\LaserGRBL\Core\GrblCore.cs:line 1511
at LaserGRBL.ConnectLogForm.BtnConnectDisconnectClick(Object sender, EventArgs e) in E:\LaserGRBL\LaserGRBL\ConnectLogForm.cs:line 183
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)