title: How to solve error "Recursive read lock acquisitions not allowed in this mode"
body: <p>I have update my website from DNN 8 to DNN 9.</p>
  
  <p>Their is already a functionality to print or download in the module.</p>
  
  <p>When I am downloading file it is given me below error and after that my website stop working on each event I am getting same error.</p>
  
  <pre><code>Exception type: LockRecursionException 
  Exception message: Recursive read lock acquisitions not allowed in this mode.
  </code></pre>