nebula-python:2.6.0
nebula:2.6.2
IndexScanExecutor failed, error E_PART_NOT_FOUND, part 3
E0518 08:18:57.733009 39 StorageAccessExecutor.h:41] IndexScanExecutor failed, error E_PART_NOT_FOUND, part 31
E0518 08:18:57.733021 39 StorageAccessExecutor.h:41] IndexScanExecutor failed, error E_PART_NOT_FOUND, part 1
E0518 08:18:57.733029 39 StorageAccessExecutor.h:41] IndexScanExecutor failed, error E_PART_NOT_FOUND, part 2
E0518 08:18:57.733042 39 StorageAccessExecutor.h:124] Storage Error: part: 3, error: E_PART_NOT_FOUND(-16).
E0518 08:18:57.733132 41 QueryInstance.cpp:108] Storage Error: part: 3, error: E_PART_NOT_FOUND(-16).
I0518 08:18:59.303295 42 GraphService.cpp:63] Authenticating user root from 10.100.34.192:56604
I0518 08:18:59.320230 39 SwitchSpaceExecutor.cpp:40] Graph switched to `dagou_nebula', space id: 1170
I0518 08:18:59.343956 17 StorageClientBase-inl.h:234] Send request to storage "nebula-storaged-3.nebula-storaged-headless.nebula-cluster.svc.cluster.local":9779
I0518 08:19:04.805634 41 GraphService.cpp:63] Authenticating user root from 10.100.34.192:32526
I0518 08:19:04.821507 39 SwitchSpaceExecutor.cpp:40] Graph switched to `dagou_nebula', space id: 1170
I0518 08:19:04.871520 23 StorageClientBase-inl.h:234] Send request to storage "nebula-storaged-0.nebula-storaged-headless.nebula-cluster.svc.cluster.local
请问造成这个错误的原因是什么