title: ImportError: cannot import name 'Container' from 'collections' - heroku
body: <p>Code running fine in local, but crash on heroku. what can I do to fix it?</p>
  <pre><code> Traceback (most recent call last)
     File &quot;/app/nao_entre_em_panico.py&quot;, line 2, in &lt;module&gt;
       from flask import Flask, jsonify, request
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/flask/__init__.py&quot;, line 17, in &lt;module&gt;
       from werkzeug.exceptions import abort
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/werkzeug/__init__.py&quot;, line 151, in &lt;module&gt;
       __import__('werkzeug.exceptions')
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/werkzeug/exceptions.py&quot;, line 71, in &lt;module&gt;
       from werkzeug.wrappers import Response
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/werkzeug/wrappers.py&quot;, line 27, in &lt;module&gt;
       from werkzeug.http import HTTP_STATUS_CODES, \
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/werkzeug/http.py&quot;, line 1148, in &lt;module&gt;
       from werkzeug.datastructures import Accept, HeaderSet, ETags, Authorization, \
     File &quot;/app/.heroku/python/lib/python3.10/site-packages/werkzeug/datastructures.py&quot;, line 16, in &lt;module&gt;
       from collections import Container, Iterable, MutableSet
   ImportError: cannot import name 'Container' from 'collections' (/app/.heroku/python/lib/python3.10/collections/__init__.py)
  </code></pre>