### Tensorflow error tensorflow.python.framework.errors_impl.NotFoundError....libtfkernel_sobol_op.so:

Solved by removing lambda stack and reinstalled it.
Somehow tensorflow seems to have been installed by pip at some point…

### CUDA error after sudo apt-get update. UserWarning: CUDA initialization: CUDA unknown error....return torch._C._cuda_getDeviceCount() > 0

Disabling the secure boot just before installing the lambda stack solved the issue.