terminating with uncaught exception of type clmdep_msgpack::v1::type_error: std::bad_cast

[nuomizai]

This error happened on CARLA server when I use leaderboard and scenario runner to create my A3C training environment (multiple CARLA servers and multiple clients). Strangely, it appeared a few hours after the start of training. Does anyone know how to solve that?

[glopezdiest]

Hey @nuomizai. Could you explain a little bit more of your setup? Is there any more information regarding this error apart from

clmdep_msgpack::v1::type_error: std::bad_cast

Is it randomly created or can it be reproduced quite reliably?

[CMakey]

hello ,this problem is the same as mine .

And the error cames as
(carla) lyc@lht-PowerEdge-R730:~/下载/CARLA_Latest$ ./CarlaUE4.sh 4.26.2-0+++UE4+Release-4.26 522 0 Disabling core dumps. terminating with uncaught exception of type clmdep_msgpack::v1::type_error: std::bad_cast Signal 6 caught. Malloc Size=65538 LargeMemoryPoolOffset=65554 CommonUnixCrashHandler: Signal=6 Failed to find symbol file, expected location: "/home/lyc/??????/CARLA_Latest/CarlaUE4/Binaries/Linux/CarlaUE4-Linux-Shipping.sym" Malloc Size=131160 LargeMemoryPoolOffset=196744 Malloc Size=131160 LargeMemoryPoolOffset=327928 Engine crash handling finished; re-raising signal 6 for the default handler. Good bye. Aborted (core dumped)

this error came just after I run the example file manual_control.py, and UE4 crashed instantly.