Unable to convert an STEP file into an STL file

I am trying to convert a given input STEP file into an STL file format. I am using the following code to do the conversion process:

// STEP Read Methods
#include "STEPControl_Reader.hxx"
#include <TopoDS_Shape.hxx>
// STL Read & Write Methods
#include <StlAPI_Writer.hxx>

int step2stl(char *in, char *out) {
  // Read from STEP
  STEPControl_Reader reader;
  IFSelect_ReturnStatus stat = reader.ReadFile(in);
  Standard_Integer NbRoots = reader.NbRootsForTransfer();
  Standard_Integer NbTrans = reader.TransferRoots();
  TopoDS_Shape Original_Solid = reader.OneShape();
 
  // Write to STL
  StlAPI_Writer stlWriter = StlAPI_Writer();
  // stlWriter.SetCoefficient(0.0001);
  stlWriter.ASCIIMode() = Standard_False;
  
  stlWriter.Write( Original_Solid, out);
  //cout << "last check " << endl;
  return 1;
}


Standard_Integer main (int argc, char *argv[]) {
  cout << argv[2] << endl;
  step2stl(argv[1], argv[2]);
  return 0;
}

When I run this code, I receive an error at the line:

 stlWriter.Write( Original_Solid, out);

The error I receive is in the NCollection_Array2.hxx file. It gives an Exception unhandled error. The exception being : Standard_RangeError. 

I am using openCascade 7.2.0 and Visual studio 2017. 

Please help.