KeyError: 'OPENSSL_CONF

[yjz1234]

When I installing petlib on win,there is an error:
ERROR: Command errored out with exit status 1: command: 'd:\python3\python3.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\12711\\AppData\\Local\\Temp\\pip-install-_5s5ibkx\\petlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\12711\\AppData\\Local\\Temp\\pip-install-_5s5ibkx\\petlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\12711\AppData\Local\Temp\pip-install-_5s5ibkx\petlib\pip-egg-info' cwd: C:\Users\12711\AppData\Local\Temp\pip-install-_5s5ibkx\petlib\ Complete output (27 lines): Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Users\12711\AppData\Local\Temp\pip-install-_5s5ibkx\petlib\setup.py", line 40, in <module> zip_safe=False, File "d:\python3\lib\site-packages\setuptools\__init__.py", line 145, in setup return distutils.core.setup(**attrs) File "d:\python3\lib\distutils\core.py", line 108, in setup _setup_distribution = dist = klass(attrs) File "d:\python3\lib\site-packages\setuptools\dist.py", line 448, in __init__ k: v for k, v in attrs.items() File "d:\python3\lib\distutils\dist.py", line 281, in __init__ self.finalize_options() File "d:\python3\lib\site-packages\setuptools\dist.py", line 740, in finalize_options ep.load()(self) File "d:\python3\lib\site-packages\setuptools\dist.py", line 747, in _finalize_setup_keywords ep.load()(self, ep.name, value) File "d:\python3\lib\site-packages\cffi\setuptools_ext.py", line 211, in cffi_modules add_cffi_module(dist, cffi_module) File "d:\python3\lib\site-packages\cffi\setuptools_ext.py", line 49, in add_cffi_module execfile(build_file_name, mod_vars) File "d:\python3\lib\site-packages\cffi\setuptools_ext.py", line 25, in execfile exec(code, glob, glob) File "petlib/compile.py", line 34, in <module> openssl_conf = os.environ["OPENSSL_CONF"] File "d:\python3\lib\os.py", line 669, in __getitem__ raise KeyError(key) from None KeyError: 'OPENSSL_CONF' ---------------------------------------- ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

[chaima99]

Did you find any solution considering this error? Because I got the same error