[Pairing Reliability] #4 Failure: Commissioning failed with CHIP Error 0x000000C9: No shared trusted root

[Saravana-kr22]

Description:
I have used python controller to run a stress test on my RPI sample dut (all-clusters-app) on Pair-Unpair test scenario for 10,000 iterations. The test passed in iteration 2608 without any error but the iteration 2609 is failed to commission the dut during the case session with the below traceback error

Traceback (most recent call last):
File "/Users/chaitanyajandhyala/code/python/matter-qa/src/matter_qa/library/helper_libs/matter_testing_support.py", line 1177, in pair_dut
raise CommissionFailure(f"Pairing with DUT failed Reason {commission_device_result.str()} ")
chip.commissioning.CommissionFailure: CommissionFailure(Pairing with DUT failed Reason src/protocols/secure_channel/CASESession.cpp:1984: CHIP Error 0x000000C9: No shared trusted root )

GitHub hash of the SDK that was being used: 3718e99

Platform
controller - python controller running on raspi,
DUT - all-cluster-app running on raspi

Provisioned using on-network

Platform Version(s)
RPI-4, 8GB RAM

Test Scenario

Pair/Provision the DUT (All-cluster-app running on raspi) using on-network
Read device information after the device is provisioned
sleep for 2 secs
Unpair the DUT (i.e. removing the fabric)
factory reset the DUT
repeat step1 - 6 for 10,000 iterations
Script reference: https://github.com/CHIP-Specifications/matter-qa/blob/main/src/matter_qa/scripts/reliability_scripts/TC_Pair.py

Reference log:
Example of Passed iteration details:

The iteration number 2608 is passed, below log files for the same
TH log: TH_log_2024-04-26_04-31-38.log
DUT log: Dut_log_2608_2024-04-26T04_31_47_630533.log

Example of Failed iteration details:

The iteration number 2609 is failed with this error below the logfile
TH log : TH_log.log
DUT log: Dut_log_2609_2024-04-26T04_37_18_972898.log32.log)

For the detailed summary please reference this json: summary.json