title: Pydicom with Heroku
body: <p>I wrote a code in streamlit with pydicom and published in heroku. So I got the error:</p>
  
  <p><a href="https://i.stack.imgur.com/lbP4d.png" rel="nofollow noreferrer">Error </a></p>
  
  <p>My code is below:</p>
  
  <pre><code>import streamlit as st
  from matplotlib import pyplot as plt
  import numpy as np
  import cv2
  from pydicom import dcmread
  import zipfile
  import io
  
  def dicom_file(filename, file):
      st.write(filename)
      dataset = dcmread(file) &lt;==LINE ERROR
  </code></pre>
  
  <p>Anybody have a idea?</p>