B4J Question WebSocket

B4J version: 4.50
Parsing code.    (0.00s)
Compiling code.    Error
The process cannot access the file 'C:\B4A-WebSocket\Objects\result.jar' because it is being used by another process.

'Non-UI application (console / server application)
#Region  Project Attributes
    #CommandLineArgs:
    #MergeLibraries: True
#End Region

Sub Process_Globals
    Public srvr As Server
End Sub

Sub AppStart (Args() As String)
    srvr.Initialize("")
    srvr.Port = 32009
    srvr.AddWebSocket("/ws", "B4A")
    srvr.Start
    StartMessageLoop
End Sub

Sub Class_Globals
    Private ws As WebSocket
    Private timer1 As Timer
End Sub

Public Sub Initialize
   
End Sub

Private Sub WebSocket_Connected (WebSocket1 As WebSocket)
    ws = WebSocket1
    timer1.Initialize("timer1", 1000)
    timer1.Enabled = True
End Sub

Sub Timer1_Tick
    ws.RunFunction("ServerTime", Array As Object(DateTime.Time(DateTime.Now)))
    ws.Flush
End Sub

Sub Device_Message(Params As Map)
    Log("Device message: " & Params.Get("message"))
End Sub

Private Sub WebSocket_Disconnected
    timer1.Enabled = False
    Log("disconnected")
End Sub