ValueError histogram with Nan values

[will-moore]

https://www.openmicroscopy.org/qa2/qa/feedback/33035/

Traceback (most recent call last):

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/django/core/handlers/base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/omeroweb/decorators.py", line 538, in wrapped
retval = f(request, *args, **kwargs)

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/omero_parade/views.py", line 195, in get_data
bins=bins)

File "<__array_function__ internals>", line 6, in histogram

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/numpy/lib/histograms.py", line 792, in histogram
bin_edges, uniform_bins = _get_bin_edges(a, bins, range, weights)

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/numpy/lib/histograms.py", line 396, in _get_bin_edges
first_edge, last_edge = _get_outer_edges(a, range)

File "/opt/omero/web/venv3/lib64/python3.6/site-packages/numpy/lib/histograms.py", line 324, in _get_outer_edges
"autodetected range of [{}, {}] is not finite".format(first_edge, last_edge))

ValueError: autodetected range of [nan, nan] is not finite