title: Uncaught Reference Error : JQuery is not Defined at drupal.js
body: <p>When clearing the Drupal Cache it automatically enable/ checks the Compressed the cache pages options and breaks many drupal functionality. </p>
  
  <p>when i inspect i found that JQuery is not Defined at drupal.js at line 5 [jQuery.noconflict() ]. i find this error on all the pages of drupal.</p>
  
  <p>I am not sure what have caused this error.</p>