error when adding a new field in the block

[LaisStefani]

Fatal error: Uncaught Error: Class 'PluginFieldsTickety' not found in /var/www/html/glpi/plugins/fields/inc/field.class.php:109 Stack trace: #0 /var/www/html/glpi/inc/commondbtm.class.php(891): PluginFieldsField->prepareInputForAdd(Array) #1 /var/www/html/glpi/plugins/fields/front/field.form.php(14): CommonDBTM->add(Array) #2 {main} thrown in /var/www/html/glpi/plugins/fields/inc/field.class.php on line 109

In debug mode it appears outside of error 500

My permissions are ok