Multidimensional Gaussian Example Failing

Tried running the multi-d example, and it appears to be failing due to a missing _marginalized_parameters attribute

Error Log

13:44 bilby INFO    : Running for label 'test', output will be saved to 'outdir_test'
Traceback (most recent call last):
  File "multidimensional_gaussian.py", line 82, in <module>
    plot=True,
  File "/home/avi.vajpeyi/.conda/envs/timeslides/lib/python3.7/site-packages/bilby/core/sampler/__init__.py", line 130, in run_sampler
    _check_marginalized_parameters_not_sampled(likelihood, priors)
  File "/home/avi.vajpeyi/.conda/envs/timeslides/lib/python3.7/site-packages/bilby/core/sampler/__init__.py", line 227, in _check_marginalized_parameters_not_sampled
    for key in likelihood.marginalized_parameters:
  File "/home/avi.vajpeyi/.conda/envs/timeslides/lib/python3.7/site-packages/bilby/core/likelihood.py", line 68, in marginalized_parameters
    return self._marginalized_parameters
AttributeError: 'MultidimGaussianLikelihood' object has no attribute '_marginalized_parameters'

Bilby Version

>>> bilby.__version__
'1.0.3: release'