DALI: test_dali_tf_dataset fails with DALI 0.18 and 0.19 on Linux x86_64 and ppc64le

I have a conda package of DALI 0.18 and 0.19 built with tensorflow 2.1. When I run the test_dali_tf_dataset.py test or other dali_tf tests, I get following error -

ERROR: test_dali_tf_dataset._test_tf_dataset_multigpu
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/nishidha/anaconda3/envs/testdali/lib/python3.6/site-packages/nose/case.py", line 198, in runTest
    self.test(*self.arg)
  File "/home/nishidha/DALI/dali/test/python/test_dali_tf_dataset.py", line 204, in _test_tf_dataset_multigpu
    device_id=device_id)
  File "/home/nishidha/anaconda3/envs/testdali/lib/python3.6/site-packages/nvidia/dali/plugin/tf.py", line 177, in __init__
    super(_DALIDatasetV2, self).__init__(self._as_variant_tensor())
  File "/home/nishidha/anaconda3/envs/testdali/lib/python3.6/site-packages/nvidia/dali/plugin/tf.py", line 191, in _as_variant_tensor
    return _dali_tf_module.dali_dataset(
AttributeError: module '2d8bda678553b69237052ba9dd1ddc3b' has no attribute 'dali_dataset'

Platform: Linux RHEL 7 x86_64 and ppc64le DALI version: 0.18 and 0.19 DALI_EXTRA: As mentioned in DALI_EXTRA_VERSION of the respective DALI release tag Tensorflow: 2.1.0 Method of test invocation: nosetests --verbose -s test_dali_tf_dataset.py:_test_tf_dataset_multigpu

Kindly help me to know if I’m missing anything that makes this test fail or the test actually has some issue.