After excution tests using xdist -n 6 some tests have status "untested"

[PLAY65]

1. More than 120 tests
   e.g pytest -n 6 --env=test .\tests --alluredir=allure-results --testrail --tr-run-id=460

Actual result: after execution some tests have status Untested
Expected result: all tests should be marked

Note: e.g. issue isn't reproduce for 30 tests

[jsfehler]

Please include a full traceback. Based on the information you provided there's no way to debug if this is an issue with the plugin, your tests, or TestRail.

[PLAY65]

Could you recommend how to increase debug level for pytest-testrail2. Previously tried to use -vv.
Only this info was obtained:
Process exited with code 1
[17:10:33 ] Python error: 2023-05-22 17:10:23,044 - [testrail] - Publishing complete.
[17:10:33 ] Step pytest (Python) failed