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An uncaught Exception was encountered

Type: Error
Message: Call to a member function real_escape_string() on bool
Filename: /home/dizinadi/public_html/siteadi.com/admin/system/database/drivers/mysqli/mysqli_driver.php
Line Number: 391
Backtrace:
File: /home/dizinadi /public_html/siteadi .com/admotors-admin/application/core/My_Model.php
Line: 161
Function: get_where
File: /home/dizinadi /public_html/siteadi .com/admin/application/helpers/ps_helper.php
Line: 220
Function: get_one
File: /home/dizinadi /public_html/siteadi .com/admin/application/views/ps/analytic.php
Line: 1
Function: get_app_config
File: /home/dizinadi /public_html/siteadi .com/admin/application/helpers/ps_helper.php
Line: 123
Function: view
File: /home/dizinadi /public_html/siteadi .com/admin/application/views/backend/partials/footer.php
Line: 60
Function: show_analytic
File: /home/dizinadi /public_html/siteadi .com/admin/application/core/My_Controller.php
Line: 167
Function: view
File: /home/dizinadi /public_html/siteadi .com/admin/application/controllers/Main.php
Line: 81
Function: load_view
File: /home/dizinadi /public_html/siteadi .com/admin/index.php
Line: 317
Function: require_once