在使用Mongoshale2.8.4版本将Mongo4.0.9版本的分片集群A同步给分片集群B，其中涉及到三个库XYZ，对于X、Y库出现了

[2024/05/08 23:26:04 CST] [INFO] NewDocumentSplitter db[X] col[X.A] res[{280332928 7.445054552e+10 2.2483357696e+10}], pieceByteSize[8589934592]
[2024/05/08 23:26:04 CST] [INFO] splitter[DocumentSplitter src[mongodb://root:@ip1:20000,IP2:20000,IP3:20000] ns[{X X.A}] count[280332928] pieceByteSize[8192 MB] pieceNumber[0]] disable split or no need
[2024/05/08 23:26:04 CST] [INFO] splitter[DocumentSplitter src[mongodb://root:@ip1:20000,IP2:20000,IP3:20000] ns[{X X.A}] count[280332928] pieceByteSize[8192 MB] pieceNumber[0]] exits
[2024/05/08 23:26:04 CST] [INFO] reader[DocumentReader id[0], src[mongodb://root:@ip1:20000,IP2:20000,IP3:20000] ns[{X X.A}] query[map[]]] client is empty, create one
[2024/05/08 23:26:04 CST] [INFO] New session to mongodb://root:@ip1:20000,IP2:20000,IP3:20000 successfully
[2024/05/08 23:26:04 CST] [INFO] reader[DocumentReader id[0], src[mongodb://root:***@ip1:20000,IP2:20000,IP3:20000] ns[{X X.A}] query[map[]] docCursorId[3978753664920095776]] generates new cursor
[2024/05/08 23:26:05 CST] [WARN] insert docs with length[128] into ns[{X X.A}] of dest mongo failed[no progress was made executing batch write op in X.A after 5 rounds (0 ops completed in 6 rounds total)] res[&{0 0 0 0 0 map[]}]

这样的错误,对于 C 库就没有问题成功同步这是为什么呢