title: Session data corrupted in django
body: <p>Every time when I'm going to my signup page, I'm receiving this error  </p>
  
  <pre><code>Session data corrupted
  </code></pre>
  
  <p>when I'm trying to signup anyway, POST request status is 302, but User is still created, but didn't save any email to registered user.</p>
  
  <p>Why I'm getting that error and how can I fix it?</p>
  
  <p>Thanks! </p>