Message in Chinese (Simplified) (中文(简体))
DocumentReference.Source 引用了一个无法识别类型的文档流。
Unlocalized message
DocumentReference.Source references an unrecognized type of document stream.
Search by GoogleDocumentReference.Source 引用了一个无法识别类型的文档流。
DocumentReference.Source references an unrecognized type of document stream.
Search by Google