Title: Restoring database… 0% complete / null parameter
Last modified: April 25, 2023

---

# Restoring database… 0% complete / null parameter

 *  Resolved [rbrunskill](https://wordpress.org/support/users/rbrunskill/)
 * (@rbrunskill)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/restoring-database-0-complete-null-parameter/)
 * I have an import that’s failing at 0%. The database file is 70MB. Version information:
   WP 6.2, PHP 8.1.9, MySQL 8.0.16, AiOWPM 7.73, AiOWPMUE 2.49
   The error.log contains
   the following:
 * This error appears 36 times…
 * `Apr 25 2023 19:33:47
   {"Number":8192,"Message":"rtrim(): Passing null to parameter#
   1 ($string) of type string is deprecated","File":"\/web_root\/domain.local\/app\/
   public\/wp-includes\/formatting.php","Line":2786}
 * Followed by this…
 *     ```wp-block-code
       Apr 25 2023 19:33:52
       {"type":1,
       "message":"Uncaught TypeError:
       Cannot assign null to property mysqli_result::$current_field of type int in \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php:64\n
       Stack trace:\n
       #0 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php(64): unserialize('O:18:\"PMXI_Impo…')\n
       #1 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php(69): Ai1wm_Database_Utility::replace_serialized_values(Array, Array, 'O:18:\"PMXI_Impo…', false)\n
       #2 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php(65): Ai1wm_Database_Utility::replace_serialized_values(Array, Array, Array, true)\n
       #3 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1670): Ai1wm_Database_Utility::replace_serialized_values(Array, Array, 'a:39:{s:8:\"file…')\n
       #4 [internal function]: Ai1wm_Database->replace_table_values_callback(Array)\n
       #5 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1582): preg_replace_callback('\/'(.*?)(?wp…')\n
       #6 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database.php(1089): Ai1wm_Database->replace_table_values('INSERT INTOwp…')\n
       #7 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/model\/import\/class-ai1wm-import-database.php(982): Ai1wm_Database->import('\/web_root\/doma…', 0)\n
       #8 \/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/controller\/class-ai1wm-import-controller.php(73): Ai1wm_Import_Database::execute(Array)\n
       #9 \/web_root\/domain.local\/app\/public\/wp-includes\/class-wp-hook.php(308): Ai1wm_Import_Controller::import(Array)\n
       #10 \/web_root\/domain.local\/app\/public\/wp-includes\/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)\n
       #11 \/web_root\/domain.local\/app\/public\/wp-includes\/plugin.php(517): WP_Hook->do_action(Array)\n
       #12 \/web_root\/domain.local\/app\/public\/wp-admin\/admin-ajax.php(188): do_action('wp_ajax_ai1wm_i…')\n#13 {main}\n thrown","file":"\/web_root\/domain.local\/app\/public\/wp-content\/plugins\/all-in-one-wp-migration\/lib\/vendor\/servmask\/database\/class-ai1wm-database-utility.php",
       "line":64
       }
       ```
   
    -  This topic was modified 3 years, 1 month ago by [rbrunskill](https://wordpress.org/support/users/rbrunskill/).

Viewing 1 replies (of 1 total)

 *  Plugin Author [Yani](https://wordpress.org/support/users/yaniiliev/)
 * (@yaniiliev)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/restoring-database-0-complete-null-parameter/#post-16709271)
 * For premium products please reach over to our [support team](https://servmask.com/contact-support).
   
   [Premium products are not supported on these forums.](https://wordpress.org/support/guidelines/#do-not-post-about-commercial-products)

Viewing 1 replies (of 1 total)

The topic ‘Restoring database… 0% complete / null parameter’ is closed to new replies.

 * ![](https://ps.w.org/all-in-one-wp-migration/assets/icon-256x256.png?rev=2458334)
 * [All-in-One WP Migration and Backup](https://wordpress.org/plugins/all-in-one-wp-migration/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/all-in-one-wp-migration/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/all-in-one-wp-migration/)
 * [Active Topics](https://wordpress.org/support/plugin/all-in-one-wp-migration/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/all-in-one-wp-migration/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/all-in-one-wp-migration/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Yani](https://wordpress.org/support/users/yaniiliev/)
 * Last activity: [3 years, 1 month ago](https://wordpress.org/support/topic/restoring-database-0-complete-null-parameter/#post-16709271)
 * Status: resolved