error

[mana4215]

Describe the bug
the projectr was complete, just this error keeps coming up
A clear and concise description of what the bug is.
LaserGrbl v7.14.0.0
Grbl v1.1f
Wrapper: UsbSerial
Win 10, Home, 10.0.19045.0 (7)
CLR: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll 4.8.9282.0 built by: NET481REL1LAST_C

TypeOf exception [System.ObjectDisposedException]
Exception message [Safe handle has been closed]
Exception source [mscorlib], thread [Main Thread]
Exception method [Void DangerousAddRef(Boolean ByRef)]

----------- stack trace -----------
at System.Runtime.InteropServices.SafeHandle.DangerousAddRef(Boolean& success)
at System.StubHelpers.StubHelpers.SafeHandleAddRef(SafeHandle pHandle, Boolean& success)
at Microsoft.Win32.UnsafeNativeMethods.GetOverlappedResult(SafeFileHandle hFile, NativeOverlapped* lpOverlapped, Int32& lpNumberOfBytesTransferred, Boolean bWait)
at System.IO.Ports.SerialStream.EventLoopRunner.WaitForCommEvent()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Hardware and software configuration (please complete the following information):

• Windows version
• Engraver brand and model
• Grbl version (i.e. 0.9j, 1.1f)
• LaserGRBL version

Additional context
Add any other context about the problem here.