title: 'Could not handshake' : Error while doing sudo apt-get update
body: <p>I am trying to install QGIS 3.4 on my Ubuntu 18.04. I am following instructions given at <a href="https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu" rel="nofollow noreferrer">QGIS website</a>.</p>
  
  <p>I have also updated my /etc/apt/sources.list file as below.</p>
  
  <pre><code>deb https://qgis.org/ubuntu-ltr bionic main
  deb-src https://qgis.org/ubuntu-ltr bionic main
  </code></pre>
  
  <p>While doing 'sudo apt-get update' I'm getting the below error.</p>
  
  <pre><code>ashj@ashj:~/Downloads/LAStools$ sudo apt-get update
  [sudo] password for ashj: 
  Ign:1 https://qgis.org/ubuntu-ltr bionic InRelease
  Err:2 https://qgis.org/ubuntu-ltr bionic Release                                                                
    Could not handshake: An unexpected TLS packet was received. [IP: 10.4.21.120 8080]
  
  </code></pre>
  
  <p>I have searched for this error and tried this <a href="https://askubuntu.com/questions/1014973/apt-update-could-not-handshake-an-unexpected-tls-packet-was-received/1014978">post</a> and made respective updates. Yet I am not able to resolve it.</p>
  
  <p>Could anyone help me understand what might be going wrong?</p>