feasible.point() failed with error lpSolve::lp() returned error code 5
See http://lpsolve.sourceforge.net/5.5/solve.htm for explanation of errors.
If you can find a feasible point (i.e. point that lies in both hulls)
for this input, supply this with the "fp" option.
Otherwise, report bug, including inputs to intersectn() at
https://github.com/davidcsterratt/geometry/issues
or to NA