title: PHPMyAdmin error code 500: "It seems that the connection to server has been lost" when exporting
body: <p>I'm running a new install of phpMyAdmin v4.7.5, on a web server at the IP address 10.0.0.10, and our MySQL server at 10.0.0.253. I'm able to browse our database tables without any issue, and literally everything else about phpMyAdmin is working.</p>
  
  <p>Except exporting data from the database. Which is exactly what we need to do today.</p>
  
  <p>The moment I click "Export" I get the following error message: </p>
  
  <p><a href="https://i.stack.imgur.com/dqmX1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dqmX1.png" alt="enter image description here"></a></p>
  
  <p>I'm at a loss for this one. There aren't any relevant errors in the Apache logs - just some debug information from ssl_engine_io.c and mod_authz_core.c</p>