Change: Improve error handling of all exists() API methods #3541

Job	Run time
Linting (3.9)	28s
Linting (3.12)	26s
Run all tests (3.11)	28s
Run all tests (3.10)	34s
Check versioning for consistency	25s
Linting (3.10)	30s
Linting (3.11)	26s
Check type hints (3.10)	31s
Check type hints (3.11)	30s
Check type hints (3.9)	29s
Run all tests (3.9)	34s
Run all tests (3.12)	31s
Check type hints (3.12)	33s
Upload coverage to codecov.io	35s
	7m 0s

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