title: Got error message: 'CalledProcessError: Command' in python?
body: <p>so I am trying to run a simple emissions modeling program called <a href="https://inmap.run/" rel="nofollow noreferrer">InMAP</a>, and have encountered a weird error message just from trying to run the <a href="https://inmap.run/blog/2019/04/20/sr/" rel="nofollow noreferrer">tutorial</a>. This is a simple python script. Basically, following the tutorial, the script downloads emissions data for the US, and then outputs the health impacts from these emissions. I followed all the directions exactly, and after running:</p>
  <pre><code># This step might take a while.
  
  from sr_util import run_sr # This allows us to use the 'run_sr' function
                             # in the 'sr_util.py' file in this same directory.
  
  output_variables = {
      'TotalPM25':'PrimaryPM25 + pNH4 + pSO4 + pNO3 + SOA',
      'deathsK':'(exp(log(1.06)/10 * TotalPM25) - 1) * TotalPop * 1.0465819687408728 * MortalityRate / 100000 * 1.025229357798165',
      'deathsL':'(exp(log(1.14)/10 * TotalPM25) - 1) * TotalPop * 1.0465819687408728 * MortalityRate / 100000 * 1.025229357798165',
  }
  
  resultsISRM = run_sr(emis, model=&quot;isrm&quot;, emis_units=&quot;tons/year&quot;, output_variables=output_variables)
  </code></pre>
  <p>I get the following error message:</p>
  <pre><code>CalledProcessError: Command. returning non-zero exit status.
  </code></pre>
  <p>I am thinking this is some discrepancy with the version of the program maybe referencing the wrong version? I am trying to learn if this is just an issue without how I have python setup, or if this type of error message means the issue is out of my control and is related to the actual website hosting this program. This should be a straightforward tutorial, so I am wondering if this is an issue with how I might have python set up, or if there is something wrong with the code in the tutorial. I am using the exact code listed in this tutorial.</p>