diff --git a/block_booksearch.php b/block_booksearch.php
index c933ade..3809593 100644
--- a/block_booksearch.php
+++ b/block_booksearch.php
@@ -22,7 +22,7 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-use block_booksearch\data\data;
+use block_booksearch\local\data;
 
 defined('MOODLE_INTERNAL') || die();
 
diff --git a/classes/external/search_book_content.php b/classes/external/search_book_content.php
index 25e5d21..57c417d 100644
--- a/classes/external/search_book_content.php
+++ b/classes/external/search_book_content.php
@@ -30,8 +30,8 @@
 use external_single_structure;
 use external_value;
 
-use block_booksearch\data\data;
-use block_booksearch\search\search;
+use block_booksearch\local\data;
+use block_booksearch\local\search;
 use context_course;
 use invalid_parameter_exception;
 use stdClass;
@@ -94,7 +94,7 @@ public static function execute_returns() {
      * array of objects each describing one search term occurance with text snippet and location data.
      */
     public static function execute($courseid, $searchstring, $contextlength) {
-        global $CFG, $DB;
+        global $USER;
         require_once(__DIR__ . '/../../locallib.php');
 
         // Validate parameter.
@@ -107,9 +107,6 @@ public static function execute($courseid, $searchstring, $contextlength) {
             ]
         );
 
-        // If an exception is thrown in the below code, all DB queries in this code will be rollback.
-        $transaction = $DB->start_delegated_transaction();
-
         $courseid = $params['courseid'];
         $searchstring = $params['searchstring'];
         $contextlength = $params['contextlength'];
diff --git a/classes/data/data.php b/classes/local/data.php
similarity index 99%
rename from classes/data/data.php
rename to classes/local/data.php
index 0e3a2e7..fceb78b 100644
--- a/classes/data/data.php
+++ b/classes/local/data.php
@@ -22,7 +22,7 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-namespace block_booksearch\data;
+namespace block_booksearch\local;
 
 use context_module;
 use moodle_url;
diff --git a/classes/search/search.php b/classes/local/search.php
similarity index 99%
rename from classes/search/search.php
rename to classes/local/search.php
index eab6285..1d19d3b 100644
--- a/classes/search/search.php
+++ b/classes/local/search.php
@@ -22,7 +22,7 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-namespace block_booksearch\search;
+namespace block_booksearch\local;
 
 use stdClass;
 
diff --git a/version.php b/version.php
index 19b55c3..3429855 100644
--- a/version.php
+++ b/version.php
@@ -23,8 +23,8 @@
  */
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2024081900;  // The current plugin version (Date: YYYYMMDDHH).
+$plugin->version   = 2024101206;  // The current plugin version (Date: YYYYMMDDHH).
 $plugin->requires  = 2020061510;  // Requires this Moodle version.
 $plugin->component = 'block_booksearch';  // Full name of the plugin (used for diagnostics).
-$plugin->release = '3.2.0';
+$plugin->release = '3.3';
 $plugin->maturity = MATURITY_STABLE;