Crash during gameplay

When I play a game, where I fight with different characters, suddenly game stops working with this log:

[2019.09.06-07.35.34:624][878]LogStats: FPlatformStackWalk::StackWalkAndDump -
0.276 s [2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: === Handled ensure: ===
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error:
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: Ensure condition failed:
BoneIndex <
EditableComponentSpaceTransforms.Num()
[File:D:\Build++UE4\Sync\Engine\Source\Runtime\Engine\Private\PhysicsEngine\PhysAnim.cpp]
[Line: 278]
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error:
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: Stack:
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3414e439
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3368e56c
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa336a6f45
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa336bb1d5
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa336a7553
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3f831723
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3f8325dd
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3f83a91b
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3fc24b3f
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa3fc208a7
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa76d513f2
KERNEL32.DLL!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error: [Callstack] 0x00007ffa792b54f4
ntdll.dll!UnknownFunction
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Error:
[2019.09.06-07.35.34:624][878]LogStats: SubmitErrorReport - 0.000 s
[2019.09.06-07.35.34:624][878]LogStats: SendNewReport - 0.222 s
[2019.09.06-07.35.34:624][878]LogStats: FDebug::EnsureFailed - 0.499 s
[2019.09.06-07.35.34:624][878]LogOutputDevice:
Warning:

Script Stack (0 frames):

[2019.09.06-07.35.34:624][878]LogWindows: Windows GetLastError: The operation
completed successfully. (0)
[2019.09.06-07.35.34:924][878]LogThreadingWindows: Error: Runnable thread
TaskGraphThreadHP 6 crashed.
[2019.09.06-07.35.34:924][878]LogWindows: Error: === Critical error: ===
[2019.09.06-07.35.34:924][878]LogWindows: Error:
[2019.09.06-07.35.34:924][878]LogWindows: Error: Assertion failed: (Index >= 0)
& (Index < ArrayNum)
[File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h]
[Line: 611]
[2019.09.06-07.35.34:924][878]LogWindows: Error: Array index out of bounds: 0
from an array of size 0
[2019.09.06-07.35.34:924][878]LogWindows: Error:
[2019.09.06-07.35.34:924][878]LogWindows: Error:
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa7673908c
KERNELBASE.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3fc11f37
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3fc146e7
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3fa27d1a
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3f9afe33
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3f9b04d0
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa340b0ab8
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa336cc4b9
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3368dd83
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa336a6f45
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa336bb1d5
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa336a7553
UE4Editor-Engine.dll!UnknownFunction

[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3f831723
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3f8325dd
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3f83a91b
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3fc24b3f
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa3fc208a7
UE4Editor-Core.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa76d513f2
KERNEL32.DLL!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error: [Callstack] 0x00007ffa792b54f4
ntdll.dll!UnknownFunction
[2019.09.06-07.35.34:924][878]LogWindows: Error:
[2019.09.06-07.35.34:924][878]LogWindows: Error: Crash in runnable thread
TaskGraphThreadHP 6
[2019.09.06-07.35.34:943][878]LogExit:
Executing StaticShutdownAfterError

I don’t know the reason of this crash, so I will be glad to get help