Fatal error: Uncaught Error: Class 'AbstractExportRenderer' not found in C:\isanto\web\titan_84\www\adds\visor_certificado\components\renderers\abstract_excel_renderer.php:5 Stack trace: #0 C:\isanto\web\titan_84\www\adds\visor_certificado\components\renderers\excel_list_renderer.php(3): include_once() #1 C:\isanto\web\titan_84\www\adds\visor_certificado\components\page\page.php(29): include_once('C:\\isanto\\web\\t...') #2 C:\isanto\web\titan_84\www\adds\visor_certificado\components\editors\cascading_editor.php(6): include_once('C:\\isanto\\web\\t...') #3 C:\isanto\web\titan_84\www\adds\visor_certificado\components\editors\cascading_combobox.php(3): include_once('C:\\isanto\\web\\t...') #4 C:\isanto\web\titan_84\www\adds\visor_certificado\components\editors\editors.php(22): include_once('C:\\isanto\\web\\t...') #5 C:\isanto\web\titan_84\www\adds\visor_certificado\components\grid\grid.php(5): include_once('C:\\isanto\\web\\t...') #6 C:\isanto\web\titan_84\www\adds\visor_certificado\components\renderers\renderer.php(3): in in C:\isanto\web\titan_84\www\adds\visor_certificado\components\renderers\abstract_excel_renderer.php on line 5