title: CI_Exceptions::show_exception() must be an instance of Exception
body: <p>I got error in codeigniter 3.0 with php7. please look below error and help me.</p>
  
  <p>Can you please let me know what wrong with my code and system library of codeigniter 3.o.</p>
  
  <pre><code>PHP Fatal error:  Uncaught TypeError: Argument 1 passed to CI_Exceptions::show_exception() must be an instance of Exception, instance of Error given, called in /var/www/html/vsports/cron/system/core/Common.php on line 663 and defined in /var/www/html/vsports/cron/system/core/Exceptions.php:190
  Stack trace:
  #0 /var/www/html/vsports/cron/system/core/Common.php(663): CI_Exceptions-&gt;show_exception(Object(Error))
  #1 [internal function]: _exception_handler(Object(Error))
  #2 {main}
    thrown in /var/www/html/vsports/cron/system/core/Exceptions.php on line 190
  
  Fatal error: Uncaught TypeError: Argument 1 passed to CI_Exceptions::show_exception() must be an instance of Exception, instance of Error given, called in /var/www/html/vsports/cron/system/core/Common.php on line 663 and defined in /var/www/html/vsports/cron/system/core/Exceptions.php:190
  Stack trace:
  #0 /var/www/html/vsports/cron/system/core/Common.php(663): CI_Exceptions-&gt;show_exception(Object(Error))
  #1 [internal function]: _exception_handler(Object(Error))
  #2 {main}
    thrown in /var/www/html/vsports/cron/system/core/Exceptions.php on line 190
  
  A PHP Error was encountered
  
  Severity: ErrorMessage:  Uncaught TypeError: Argument 1 passed to CI_Exceptions::show_exception() must be an instance of Exception, instance of Error given, called in /var/www/html/vsports/cron/system/core/Common.php on line 663 and defined in /var/www/html/vsports/cron/system/core/Exceptions.php:190
  Stack trace:
  #0 /var/www/html/vsports/cron/system/core/Common.php(663): CI_Exceptions-&gt;show_exception(Object(Error))
  #1 [internal function]: _exception_handler(Object(Error))
  #2 {main}
    thrownFilename: /var/www/html/vsports/cron/system/core/Exceptions.phpLine Number: 190
  </code></pre>