Error while running Secure-ML

[lsm000]

Hello, when I run ./build/bin/ideal_functionality [num_iter], the following error occurred:

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Training
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terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
Aborted(core dumped)

I have tried to redo these steps with another virtual machine, but the same problem still occurred.
Do you know the reason for this and how to solve it?
Thank you!