VIAVI TestCenter: Automation - ERROR run:158 in perform: Unable to open <path>

While running scripts, unable to capture the packets and getting the following error: 2018-09-22 12:21:28.715   DOT1P_TestCase49     ERROR   run:158 in perform: Unable to open /root/Spirent/TestCenter 4.XX/Logs/2018-09-22_07-29-20_PID21371/FileEntry.db 2018-09-22 12:21:28.716   CPU_CMD              DEBUG   write:148 Traceback (most recent call last): 2018-09-22 12:21:28.722   CPU_CMD              DEBUG   write:148   File "./runTest", line 151, in run 2018-09-22 12:21:28.729   CPU_CMD              DEBUG   write:148     testcase.start_testCase() 2018-09-22 12:21:28.735   CPU_CMD              DEBUG   write:148   File "/root/User/User/CNDLP/differentiated/classification/pcp/DOT1P_TestCase49.py", line 300, in start_testCase 2018-09-22 12:21:28.741   CPU_CMD              DEBUG   write:148   File "/root/User/User/Spirent/SpirentAPI.py", line 982, in saveCaptureData 2018-09-22 12:21:28.764   CPU_CMD              DEBUG   write:148   File "/root/User/User/Spirent/StcPython.py", line 124, in perform 2018-09-22 12:21:28.775   CPU_CMD              DEBUG   write:148 RuntimeError: in perform: Unable to open /root/Spirent/TestCenter 4.XX/Logs/2018-09-22_07-29-20_PID21371/FileEntry.db  

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