使用OpenID登陆, 报502错误

[darth30joker]

在注册和登陆页面, 选择使用Google帐号登陆, 返回502错误:

错误URL为: http://localhost:5000/users/openid/google/?next=http://localhost:5000/users/signin/&openid_complete=yes&janrain_nonce=2013-04-21T08%3A49%3A34ZkeSu4z&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.mode=id_res&openid.op_endpoint=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fud&openid.response_nonce=2013-04-21T08%3A49%3A37ZeS8dYWQhXfYWHQ&openid.return_to=http%3A%2F%2Flocalhost%3A5000%2Fusers%2Fopenid%2Fgoogle%2F%3Fnext%3Dhttp%3A%2F%2Flocalhost%3A5000%2Fusers%2Fsignin%2F%26openid_complete%3Dyes%26janrain_nonce%3D2013-04-21T08%253A49%253A34ZkeSu4z&openid.assoc_handle=1.AMlYA9UY_tzk0fG7YxXADOrlDEwTj5hFNWHnBq2BFdW7C4RWcIF7YAAJ0NESew&openid.signed=op_endpoint%2Cclaimed_id%2Cidentity%2Creturn_to%2Cresponse_nonce%2Cassoc_handle%2Cns.ext1%2Cext1.mode%2Cext1.type.ext2%2Cext1.value.ext2%2Cext1.type.ext3%2Cext1.value.ext3%2Cext1.type.ext5%2Cext1.value.ext5%2Cext1.type.ext0%2Cext1.value.ext0&openid.sig=toJ7oZFOURFGEi%2FBuVryNpLz%2Bks%3D&openid.identity=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fid%3Fid%3DAItOawlzHlmpe4dxN9MbDa9IAT0OKL5FBkJI2P8&openid.claimed_id=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fid%3Fid%3DAItOawlzHlmpe4dxN9MbDa9IAT0OKL5FBkJI2P8&openid.ns.ext1=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0&openid.ext1.mode=fetch_response&openid.ext1.type.ext2=http%3A%2F%2Fschema.openid.net%2Fcontact%2Femail&openid.ext1.value.ext2=david.scriptfan%40gmail.com&openid.ext1.type.ext3=http%3A%2F%2Faxschema.org%2FnamePerson%2Ffirst&openid.ext1.value.ext3=David&openid.ext1.type.ext5=http%3A%2F%2Faxschema.org%2FnamePerson%2Flast&openid.ext1.value.ext5=Xie&openid.ext1.type.ext0=http%3A%2F%2Faxschema.org%2Fcontact%2Femail&openid.ext1.value.ext0=david.scriptfan%40gmail.com