title: Application crashes with "symbol _ZdlPvm, version Qt_5 not defined in file libQt5Core.so.5 with link time reference"
body: <p>I have the following situation: I need to have program running in an AWS EC2 Server. </p>
  
  <p>The program is made using Qt. Recently, I updated the program AND the Qt Version provided by Amazon to 5.9.2.</p>
  
  <p>I develop the program in one of my computers and when it is done, I copy it to the server.</p>
  
  <p>I use a second computer to connect to the servers (I can switch between connected to the computer next to me or the AWS server).</p>
  
  <p>Now the problem is that when I'm doing one of the transactions, the program on the AWS server crashes with this error:</p>
  
  <pre><code>symbol _ZdlPvm, version Qt_5 not defined in file libQt5Core.so.5 with link time reference
  </code></pre>
  
  <p>If I do the same transaction against the program in my own local computer, it works just fine. </p>
  
  <p>This does not seem to me like a bug caused by my code but rather by the link and/or compile process.</p>
  
  <p>Can anyone tell me what it means o how I can diagnose the problem?</p>