[Fsky]

I've received many of the same crash reports over the past two years,I don't know how to fix it,I would appreciate it if someone give some help.
when survivors wipe out on the C5M4 and C6M1, the game server crashes.
Crash ID: Z6YQ-RP2W-URRJ TW6V-HRGP-XDDM
Functions:
0 engine_srv.so!Sys_Error_Internal(bool, char const*, char*) + 0x129
1 engine_srv.so!Sys_Error(char const*, ...) + 0x20
2 engine_srv.so!ED_Alloc(int) + 0x192
3 engine_srv.so!CVEngineServer::CreateEdict(int ) + 0x12
4 server_srv.so!CServerNetworkProperty::AttachE dict(edict_t*) + 0x4d
5 server_srv.so!CBaseEntity:: PostConstructor(char const*) + 0xc4
6 server_srv.so!CEntityFactory<CParticleSystem> ::Create(char const*) + 0x2d
7 server_srv.so!CreateEntityByName(char const*, int, bool) + 0x42
8 server_srv.so!VScript_ParseEntity(char const*, HSCRIPT__*) + 0x25
9 server_srv.so!Script_PrecacheItemFromTable(HS CRIPT__*) + 0x82
10 server_srv.so!CNonMemberScriptBinding1<bool (*)(HSCRIPT__*), bool, HSCRIPT__*>::Call(void*, void*, CVariantBase<CVariantDefaultAllocator>*, int, CVariantBase<CVariantDefaultAllocator>*) + 0x4b
11 vscript_srv.so!CSquirrelVM::TranslateCall(SQV M*) + 0x1de
12 vscript_srv.so!SQVM::CallNative(SQNativeClosu re*, int, int, SQObjectPtr&, bool&) + 0x3c1
13 vscript_srv.so!SQVM::Execute(SQObjectPtr&, int, int, SQObjectPtr&, unsigned int, SQVM::ExecutionType) + 0xb1b
14 vscript_srv.so!SQVM::Call(SQObjectPtr&, int, int, SQObjectPtr&, unsigned int) + 0x139
15 vscript_srv.so!sq_call + 0x63
16 vscript_srv.so!CSquirrelVM::ExecuteFunction(H SCRIPT__*, CVariantBase<CVariantDefaultAllocator>*, int, CVariantBase<CVariantDefaultAllocator>*, HSCRIPT__*, bool) + 0x326
17 server_srv.so!CVScriptGameEventListener::RunG ameEventCallbacks(char const*, HSCRIPT__*) + 0x98
18 server_srv.so!CVScriptGameEventListener::Fire GameEvent(IGameEvent*) + 0x1f2
19 engine_srv.so!CGameEventManager::FireEventInt ern(IGameEvent*, bool, bool) + 0x61f
20 engine_srv.so!CGameEventManager::FireEvent(IG ameEvent*, bool) + 0x52
21 sourcemod.2.l4d2.so!__SourceHook_FHCls_IGameE ventManager2FireEvent0::Func(IGameEvent*, bool) [EventManager.cpp:41 + 0x15]
22 server_srv.so!PlayerSaveData::Restore(CTerror Player*) + 0xb3c
23 0xdba7adc4
24 0xdba7aca4
25 0xdba7ab84
26 server_srv.so!CDirector::Update() + 0xf3f
27 server_srv.so!CServerGameDLL::GameFrame(bool) + 0x61c
28 sourcemod.2.l4d2.so!__SourceHook_FHCls_IServe rGameDLLGameFramefalse::Func(bool) [sourcemod.cpp:54 + 0x14]
29 engine_srv.so!SV_Think(bool) + 0x1c8
30 engine_srv.so!SV_Frame(bool) + 0x168
31 engine_srv.so!_Host_RunFrame_Server(bool) + 0x17c
32 engine_srv.so!_Host_RunFrame(float) + 0x470
33 engine_srv.so!CHostState::State_Run(float) + 0xf8
34 engine_srv.so!CHostState::FrameUpdate(float) + 0x166
35 engine_srv.so!HostState_Frame(float) + 0x1d
36 engine_srv.so!CEngine::Frame() + 0x54f
37 engine_srv.so!CDedicatedServerAPI::RunFrame() + 0x26
38 dedicated_srv.so!RunServerIteration(bool) + 0x3c
39 dedicated_srv.so!RunServer(bool) + 0x48
40 engine_srv.so!CModAppSystemGroup::Main() + 0x8d
41 engine_srv.so!CAppSystemGroup::Run() + 0x38
42 engine_srv.so!CDedicatedServerAPI::ModInit(Mo dInfo_t&) + 0x1af
43 dedicated_srv.so!CDedicatedAppSystemGroup::Ma in() + 0xb5
44 dedicated_srv.so!CAppSystemGroup::Run() + 0x38
45 dedicated_srv.so!CAppSystemGroup::Run() + 0x38
46 dedicated_srv.so!main + 0x217
47 srcds_linux!main + 0xf2
48 libc-2.31.so!__libc_start_main + 0xf5
49 srcds_linux + 0x885
50 srcds_linux + 0x630
51 srcds_linux + 0x950
52 srcds_linux + 0x9c0
53 linux-gate.so + 0x540