Traceback (most recent call last):


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\interactiveshell.py", line 3254, in run_ast_nodes

if (await self.run_code(code, result,
async_=asy)):


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\interactiveshell.py", line 3348, in run_code

self.showtraceback(running_compiled_code=True)


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\interactiveshell.py", line 2047, in showtraceback

value, tb, tb_offset=tb_offset)


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\ultratb.py", line 1418, in structured_traceback

self, etype, value, tb, tb_offset, number_of_lines_of_context)


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\ultratb.py", line 1318, in structured_traceback

self, etype, value, tb, tb_offset, number_of_lines_of_context


 "c:\programdata\anaconda3\envs\tensorflow2\lib\site-packages\IPython\core\ultratb.py", line 1186, in structured_traceback

formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
TypeError: must be str, not list

Traceback (most recent call last):


 "/builddir/build/BUILD/MDAnalysis-0.16.0/MDAnalysisTests-0.16.0/MDAnalysisTests/analysis/test_encore.py", line 751, in test_dimensionality_reduction_two_ensembles

encore.reduce_dimensionality([self.ens1, self.ens2])


 "/builddir/build/BUILDROOT/python-MDAnalysis-0.16.0-1.fc27.i386/usr/lib/python2.7/site-packages/MDAnalysis/analysis/encore/dimensionality_reduction/reduce_dimensionality.py", line 197, in reduce_dimensionality

**kwargs))


 "/builddir/build/BUILDROOT/python-MDAnalysis-0.16.0-1.fc27.i386/usr/lib/python2.7/site-packages/MDAnalysis/analysis/encore/confdistmatrix.py", line 358, in get_distance_matrix

verbose=verbose)


 "/builddir/build/BUILDROOT/python-MDAnalysis-0.16.0-1.fc27.i386/usr/lib/python2.7/site-packages/MDAnalysis/analysis/encore/confdistmatrix.py", line 99, in conformational_distance_matrix

ensemble.select_atoms(selection), format='fac'))


 "/builddir/build/BUILDROOT/python-MDAnalysis-0.16.0-1.fc27.i386/usr/lib/python2.7/site-packages/MDAnalysis/coordinates/memory.py", line 365, in timeseries

return array.take(asel.indices, a_index)
TypeError: Cannot cast array data from dtype('int64') to dtype('int32') according to the rule 'safe'
