Failed database access using panel

When i enter this code

<?php
db_set_active('stats'); // Use my_other_db

// Read all fields from the club table.
  $select = db_select('cricket__50over__batting__top_run_scored', 'c');
  $select->fields('c', array('Name','Runs'))//SELECT the fields from c
         ->orderBy('Runs', 'DESC');//ORDER BY Runs

  //returns each selected record as an object instead of an array.
  $entries = $select->execute()->fetchAll();
  
  $rows = array();
  foreach ($entries as $entry) {
      // Sanitize the data before handing it off to the theme layer.
      $rows[] = array_map('check_plain', (array) $entry);
    }
    // Make a table for them.
    $header = array( t('Name'), t('Runs'));
    $output = theme('table', array('header' => $header, 'rows' => $rows)); 
    echo $output;
db_set_active(); // Go back to Drupal's db.
?>

in the body of a panel pane the desired result of the code shows perfectly fine in the preview but when i save the panel and move to the page where the panel is pathed the page doesn't load but instead gives me this error

/* edit this piece of code in the body of a content type*/
Additional uncaught exception thrown while handling exception.
Original

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'stats.panels_layout' doesn't exist: SELECT t__0.* FROM {panels_layout} t__0 WHERE (plugin = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => flexible ) in ctools_export_load_object() (line 427 of /opt/lampp/htdocs/xxxxxx/sites/all/modules/ctools/includes/export.inc).
Additional

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'stats.stylizer' doesn't exist: SELECT t__0.* FROM {stylizer} t__0; Array ( ) in ctools_export_load_object() (line 427 of /opt/lampp/htdocs/xxxxx/sites/all/modules/ctools/includes/export.inc).
Uncaught exception thrown in session handler.

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'stats.sessions' doesn't exist: SELECT 1 AS expression FROM {sessions} sessions WHERE ( (sid = :db_condition_placeholder_0) AND (ssid = :db_condition_placeholder_1) ) FOR UPDATE; Array ( [:db_condition_placeholder_0] => dbm6wjQN1g9F0uoE0-qtWVc5_g-fRdKUR9iB52OwYqQ [:db_condition_placeholder_1] => ) in _drupal_session_write() (line 206 of /opt/lampp/htdocs/xxxxx/includes/session.inc).
Thanks in advance for any advance and tips for solving this error.