我刚刚使用 Firebase 3.2.0 启动了一个新项目（Swift 2.2；iOS 9；Xcode 7.3.1），并且在输入无效电子邮件和弱密码时遇到以下错误作为我授权/注册过程的一部分：
NSError
Error Domain=FIRAuthErrorDomain Code=17999 "An internal error has occurred, print and
inspect the error details for more information." UserInfo={error_name=ERROR_INTERNAL_ERROR,
NSUnderlyingError=0x7c0549a0 {Error Domain=FIRAuthInternalErrorDomain Code=3 "(null)"
UserInfo={FIRAuthErrorUserInfoDeserializedResponseKey=<CFBasicHash 0x7c04bd90 [0x1a701f8]>
{type = immutable dict, count = 3,
entries =>
0 : <CFString 0x7c0fb0c0 [0x1a701f8]>{contents = "errors"} =
<CFArray 0x7c0713a0 [0x1a701f8]>{type = immutable, count = 1, values = (
0 : <CFBasicHash 0x7c0fac00 [0x1a701f8]>{type = immutable dict, count = 3,
entries =>
0 : <CFString 0x7c051080 [0x1a701f8]>{contents …