Fix/duplication exception #299

Job	Run time
lock_check (ubuntu-latest, 3.10)	2m 27s
lock_check (macos-latest, 3.10)	1m 51s
lock_check (windows-latest, 3.10)	2m 37s
gitleaks	14s
copyright_and_doc_check (ubuntu-latest, 3.10)	2m 42s
linter_checks (ubuntu-latest, 3.10.6)	5m 15s
test (ubuntu-latest, 3.8)	4m 3s
test (ubuntu-latest, 3.9)	5m 12s
test (ubuntu-latest, 3.10)	4m 11s
test (ubuntu-latest, 3.11)	6m 12s
test (macos-latest, 3.8)	4m 53s
test (macos-latest, 3.9)	4m 33s
test (macos-latest, 3.10)	4m 20s
test (macos-latest, 3.11)	4m 21s
test (windows-latest, 3.8)	5m 22s
test (windows-latest, 3.9)	6m 14s
test (windows-latest, 3.10)	5m 15s
test (windows-latest, 3.11)	5m 59s
e2e-tests (ubuntu-latest, 3.10)	30m 13s
	1h 45m 54s

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