Hi, I am having the following error in the python basic strategy example. Could you please help me ?

 15 | 10:33:18: 
Runtime Error: Python.Runtime.PythonException: TypeError : No method matches given arguments
  at Python.Runtime.PyObject.Invoke (Python.Runtime.PyTuple args, Python.Runtime.PyDict kw) [0x00033] in :0 
  at Python.Runtime.PyObject.InvokeMethod (System.String name, Python.Runtime.PyTuple args, Python.Runtime.PyDict kw) [0x00007] in :0 
  at Python.Runtime.PyObject.TryInvokeMember (System.Dynamic.InvokeMemberBinder binder, System.Object[] args, System.Object& result) [0x00038] in :0 
  at (wrapper dynamic-method) System.Object:CallSite.Target (System.Runtime.CompilerServices.Closure,System.Runtime.CompilerServices.CallSite,object,QuantConnect.Data.Slice)
  at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1] (System.Runtime.CompilerServices.CallSite site, T0 arg0, T1 arg1) [0x00128] in <63992662b765477a898ef49cdcc99ee2>:0 
  at QuantConnect.Python.Wrappers.AlgorithmPythonWrapper.OnData (QuantConnect.Data.Slice slice) [0x00050] in <1ecd3b97c87746fa8c76873b02c8516a>:0 

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