Open method returns nil

Hi all,
I am trying to read an HDF5 file using Torch.
I tried with the sample code:

`require 'hdf5'

local myFile = hdf5.open('/path/to/read.h5', 'r')

local data = myFile:read('/path/to/data'):all()

myFile:close()`

The second line works without any error but it returns nil.

When I use this it is okay:

`hdf5.open('test.hdf5')'

[HDF5File: (16777223 / FILE) /pfs/bh/proj/EvolvingAI/mnorouzz/Serengiti/test.hdf5]`

But I cannot put it in a variable.
I tried to reinstall the package, but I git the same results.
What is the problem?
Thanks

Start by reproducing the example around hdf5.open('/path/to/read.h5', 'r') and compare it with the working hdf5.open('test.hdf5') call. Inspect the hdf5.open entry point and relevant usage examples to determine why assigning the result produces nil; done means identifying a reproducible cause and a concrete fix or explanation.

Written by the indexing model from the issue text.