RRuntimeError: Error in file(filename, "r", encoding = encoding) : cannot open the connection

[Fclem]

View details in Rollbar: https://rollbar.com/fclem/Breeze/items/337/

Traceback (most recent call last):
  File "/homes/breeze/code/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/homes/breeze/code/venv/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py", line 20, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/homes/breeze/code/isbio/breeze/views.py", line 692, in ajax_patients_data
    data_tbl = rora.get_patients_info(params, str(which))
  File "/homes/breeze/code/isbio/breeze/rora.py", line 137, in get_patients_info
    args=(subject, start, span, sort_col, sort_dir, search_value))
  File "/homes/breeze/code/isbio/breeze/rora.py", line 392, in global_r_call
    source_file(r_file)
  File "/homes/breeze/code/isbio/breeze/rora.py", line 24, in source_file
    ro.r(r_code)
  File "/homes/breeze/code/venv/local/lib/python2.7/site-packages/rpy2/robjects/__init__.py", line 240, in __call__
    res = self.eval(p)
  File "/homes/breeze/code/venv/local/lib/python2.7/site-packages/rpy2/robjects/functions.py", line 86, in __call__
    return super(SignatureTranslatedFunction, self).__call__(*args, **kwargs)
  File "/homes/breeze/code/venv/local/lib/python2.7/site-packages/rpy2/robjects/functions.py", line 35, in __call__
    res = super(Function, self).__call__(*new_args, **new_kwargs)
RRuntimeError: Error in file(filename, "r", encoding = encoding) : 
  cannot open the connection