Linux Segmentation Fault (TFS 0.3.7) / OTX 2.15

[rexgandi]

Hello. I use my engine on Ubuntu 18.04.
I have many crashes

When i sell item on NPC --- GDB:

Thread 2 "theotxserver" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff009b700 (LWP 30391)]
0x00005555555e73e4 in ContainerIterator::operator*() ()

When i try use command - createitems /i --- GDB:

Thread 2 "theotxserver" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff009b700 (LWP 30406)]
0x000055556641ead8 in ?? ()
(gdb)

OR

Thread 2 "theotxserver" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff009b700 (LWP 30525)]
0x00005555557362f3 in Player::__queryMaxCount(int, Thing const*, unsigned int, unsigned int&, unsigned int) const ()
(gdb)

Next i use script when have a doPlayerAddItem() and in GDB:

Thread 2 "theotxserver" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff009b700 (LWP 30529)]
0x00005555557362f3 in Player::__queryMaxCount(int, Thing const*, unsigned int, unsigned int&, unsigned int) const ()
(gdb)

When I delete - doPlayerAddItem in XXX.lua - All it's OK.
Help Me !!!