notebook自动重启，这是日志：

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C++ Traceback (most recent call last):
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0   std::thread::_Impl >::_M_run()
1   std::__future_base::_State_baseV2::_M_do_set(std::function ()>*, bool*)
2   paddle::framework::SignalHandle(char const*, int)
3   paddle::platform::GetCurrentTraceBackString[abi:cxx11]()

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Error Message Summary:
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FatalError: `Segmentation fault` is detected by the operating system.
  [TimeInfo: *** Aborted at 1621502494 (unix time) try "date -d @1621502494" if you are using GNU date ***]
  [SignalInfo: *** SIGSEGV (@0x20) received by PID 99 (TID 0x7fdf869bb700) from PID 32 ***]

[I 2021-05-20 17:21:35.592 SingleUserNotebookApp wsintercept:182] jupyter_notebook_cell: "%whos"
[I 2021-05-20 17:21:36.990 SingleUserNotebookApp restarter:110] KernelRestarter: restarting kernel (1/5), keep random ports
kernel 7e356855-9bd1-453f-a13c-f630656e6e83 restarted