Fix/log unknown session #1140

Job	Run time
checks / pre-commit	36s
checks / readme-snippets	15s
checks / test (3.11, lowest-direct, ubuntu-latest)	53s
checks / test (3.12, lowest-direct, ubuntu-latest)	56s
checks / test (3.11, lowest-direct, windows-latest)	3m 5s
checks / test (3.10, locked, ubuntu-latest)	50s
checks / test (3.12, locked, ubuntu-latest)	57s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 0s
checks / test (3.10, locked, windows-latest)	2m 30s
checks / test (3.10, lowest-direct, windows-latest)	2m 20s
checks / test (3.10, lowest-direct, ubuntu-latest)	51s
checks / test (3.13, lowest-direct, windows-latest)	2m 42s
checks / test (3.12, locked, windows-latest)	3m 16s
checks / test (3.12, lowest-direct, windows-latest)	3m 42s
checks / test (3.11, locked, ubuntu-latest)	52s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.13, locked, windows-latest)	2m 9s
checks / test (3.11, locked, windows-latest)	2m 32s
checks / test (3.14, lowest-direct, windows-latest)	2m 22s
checks / test (3.14, locked, ubuntu-latest)	2m 21s
checks / test (3.14, locked, windows-latest)	3m 3s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 19s
all-green	5s
	39m 21s

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