Backport PR #37034 on branch 1.1.x (REGR: Fix casting of None to str during astype)
Backport PR #37034: REGR: Fix casting of None to str during astype
---------------------------------- Hypothesis ----------------------------------
Falsifying example: test_on_offset_implementations(
    dt=datetime.datetime(1900, 1, 1, 0, 0, tzinfo=<DstTzInfo 'US/Michigan' LMT-1 day, 18:28:00 STD>),
    offset=<5 * YearBegins: month=1>,
)
You can reproduce this example by temporarily adding @reproduce_failure('5.37.1', b'AAICSwAAAAAAAAAACAAABQA=') as a decorator on your test case