Initial sync failed again and again due to unique index conflict

Hi, 

I encountered a problem when initial sync failed due to unique index conflict, and it can not be recovered, the error messages are as below:

2018-06-28T17:53:32.046+0800 I REPL [initandlisten] Replaying stored operations from { ts: Timestamp 1530177067000|2, t: 6 } (exclusive) to { ts: Timestamp 1530177100000|62, t: 7 } (inclusive).
2018-06-28T17:53:32.047+0800 F STORAGE [initandlisten] Unique index cursor seeing multiple records for key { : "423925:333C49:2397ED:e000", : "com.allfootballapp.news" }
2018-06-28T17:53:32.047+0800 I - [initandlisten] Fatal Assertion 28608 at src/mongo/db/storage/wiredtiger/wiredtiger_index.cpp 974

Please help!