title: fail to install requirements using "pip install -r requirements.txt"
body: <p>I'm trying to install packages using &quot;pip install -r requirements.txt&quot; command on bash in Window.
  Below shows the requirements.txt</p>
  <pre><code>Package Version
  - - - -  - - - - 
  absl-py                      1.0.0
  appdirs                      1.4.4
  astroid                      2.11.2
  astunparse                   1.6.3
  audioread                    2.1.9
  black                        22.3.0
  cachetools                   5.0.0
  certifi                      2021.10.8
  ~~~~                         ~~~~~
  </code></pre>
  <p>However, I got a Error like:
  ERROR: Invalid requirement: 'Package Version' (from line 1 of requirements.txt)</p>
  <p>And then, I tried without first line in requirements.txt, but I got the same error message.
  How can I handle this problem?</p>