title: KeyError: "Unable to open object (object 'xxxxxx' doesn't exist)"
body: <p>In part of my code, I create a dataset</p>
  <pre><code>with h5py.File('xxxxxx.h5', 'w') as f:
      f.create_dataset('xxxx', data=xxxxxx). 
  </code></pre>
  <p>The code generates the .h5 file and stores it in the specified location, but once I want to open the file, it give me the following error:
  <img src="https://i.stack.imgur.com/hxR0l.jpg" alt="1" /></p>
  <p>Any idea how to fix the problem? I appreciate it.</p>