今天使用七牛云备份时出现报错 From cffi callback <function _verify_callback at 0x7f234d8841b8>: Traceback (most recent call last): File "/usr/lib64/python2.7/site-packages/OpenSSL/SSL.py", line 309, in wrapper _lib.X509_up_ref(x509) AttributeError: 'module' object has …