ZeroDivisionError (utils.py:159)

[alanbchristie]

Stumbled on this exception in the backend.log of the Production stack today...

2023-01-11T16:16:34 django.request.log_response():230 ERROR # Internal Server Error: /api/molimg/40925/
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/usr/local/lib/python3.7/dist-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.7/dist-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/viewsets.py", line 114, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/views.py", line 505, in dispatch
    response = self.handle_exception(exc)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/views.py", line 465, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
    raise exc
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/views.py", line 502, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/mixins.py", line 56, in retrieve
    return Response(serializer.data)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/serializers.py", line 562, in data
    ret = super().data
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/serializers.py", line 260, in data
    self._data = self.to_representation(self.instance)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/serializers.py", line 529, in to_representation
    ret[field.field_name] = field.to_representation(attribute)
  File "/usr/local/lib/python3.7/dist-packages/rest_framework/fields.py", line 1905, in to_representation
    return method(value)
  File "/code/viewer/serializers.py", line 304, in get_mol_image
    width=int(float(params["width"])),
  File "/code/api/utils.py", line 159, in draw_mol
    scale_x = width / dim_x
ZeroDivisionError: division by zero