**Steps to replicate the issue**:
`py -3.12 pwb.py site_tests -v TestSiteProofreadinfo`
**What happens?**:
```
tests: max_retries reduced from 15 to 1
test_cache_proofreadinfo_on_site_with_proofreadpage (__main__.TestSiteProofreadinfo.test_cache_proofreadinfo_on_site_with_proofreadpage)
Test Site._cache_proofreadinfo(). ... ok
test_cache_proofreadinfo_on_site_without_proofreadpage (__main__.TestSiteProofreadinfo.test_cache_proofreadinfo_on_site_without_proofreadpage)
Test Site._cache_proofreadinfo(). ... Exception ignored in garbage collection:
Traceback (most recent call last):
File "D:\pwb\GIT\core\pywikibot\site\_basesite.py", line 187, in __getattr__
def __getattr__(self, attr):
SystemError: <function BaseSite.family at 0x0000023AFBD87240> returned a result with an exception set
ERROR
======================================================================
ERROR: test_cache_proofreadinfo_on_site_without_proofreadpage (__main__.TestSiteProofreadinfo.test_cache_proofreadinfo_on_site_without_proofreadpage)
Test Site._cache_proofreadinfo().
----------------------------------------------------------------------
Traceback (most recent call last):
File "D:\pwb\GIT\core\tests\site_tests.py", line 1236, in test_cache_proofreadinfo_on_site_without_proofreadpage
site.proofread_index_ns
File "D:\pwb\GIT\core\pywikibot\site\_basesite.py", line 198, in __getattr__
raise AttributeError(f'{type(self).__name__} instance has no '
AttributeError: APISite instance has no attribute 'proofread_index_ns'. Did you mean: 'proofread_page_ns'?
----------------------------------------------------------------------
Ran 2 tests in 1.739s
FAILED (errors=1)
```
https://github.com/wikimedia/pywikibot/actions/runs/4647025294/jobs/8230498089
https://github.com/wikimedia/pywikibot/actions/runs/4647025294/jobs/8230498136
In short:
```
import pywikibot
s = pywikibot.Site('en')
s._cache_proofreadinfo()
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
s._cache_proofreadinfo()
File "D:\pwb\GIT\core\pywikibot\site\_decorators.py", line 58, in callee
raise UnknownExtensionError(
pywikibot.exceptions.UnknownExtensionError: Method "_cache_proofreadinfo" is not implemented without the extension ProofreadPage
s.proofread_index_ns
Exception ignored in tp_clear of: <class 'cell'>
Traceback (most recent call last):
File "D:\pwb\GIT\core\pywikibot\site\_basesite.py", line 187, in __getattr__
def __getattr__(self, attr):
SystemError: <function BaseSite.family at 0x000002196EF56480> returned a result with an exception set
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
s.proofread_index_ns
File "D:\pwb\GIT\core\pywikibot\site\_basesite.py", line 198, in __getattr__
raise AttributeError(f'{type(self).__name__} instance has no '
AttributeError: APISite instance has no attribute 'proofread_index_ns'. Did you mean: 'proofread_page_ns'?
```
**What should happen instea
s:**d:**
```
import pywikibot
s = pywikibot.Site('en')
s._cache_proofreadinfo()
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
s._cache_proofreadinfo()
File "D:\pwb\GIT\core\pywikibot\site\_decorators.py", line 58, in callee
raise UnknownExtensionError(
pywikibot.exceptions.UnknownExtensionError: Method "_cache_proofreadinfo" is not implemented without the extension ProofreadPage
s.proofread_index_ns
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
s.proofread_index_ns
File "D:\pwb\GIT\core\pywikibot\site\_extensions.py", line 127, in proofread_index_ns
self._cache_proofreadinfo()
File "D:\pwb\GIT\core\pywikibot\site\_decorators.py", line 58, in callee
raise UnknownExtensionError(
pywikibot.exceptions.UnknownExtensionError: Method "_cache_proofreadinfo" is not implemented without the extension ProofreadPage
```
**Software version**:
Python 3.12a7 (works with 3.12a3-6)
Pywikibot 8.1.0dev3
Pywikibot 8.0.3