Gridpath .16 testing issue

[MahavirSingh20]

After installing GridPath .16, while testing GridPath codebase with the below command
python -m unittest discover tests
following error occurred:
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................E.E..........................................................

ERROR: tearDownClass (test_examples.TestExamples)

Traceback (most recent call last):
File "C:\Users\aniket.tiwari\PATH\TO\gridpath16\tests\test_examples.py", line 1288, in tearDownClass
os.remove(DB_PATH)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: '../db\unittest_examples.db'

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ERROR: setUpClass (test_viz.TestExamples)

Traceback (most recent call last):
File "C:\Users\aniket.tiwari\PATH\TO\gridpath16\tests\test_viz.py", line 59, in setUpClass
os.remove(DB_PATH)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: '../db\unittest_examples.db'

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Ran 739 tests in 434.492s