Hello,
thanks to your reply, result:
i have put last version plugin and template...
Une erreur est survenue
0 Cannot use object of type Joomla\Component\Templates\Administrator\View\Style\HtmlView as array
Call stack
Function Location
1 () JROOT/plugins/system/t3/base-bs3/html/layouts/joomla/edit/fieldset.php:13
2 include() JROOT/plugins/system/t3/includes/core/t3.php(528) : eval()'d code:128
3 Joomla\CMS\Layout_FileLayout->render() JROOT/libraries/src/Layout/LayoutHelper.php:76
4 Joomla\CMS\Layout\LayoutHelper::render() JROOT/administrator/components/com_templates/tmpl/style/edit.php:52
5 include() JROOT/libraries/src/MVC/View/HtmlView.php:410
6 Joomla\CMS\MVC\View\HtmlView->loadTemplate() JROOT/libraries/src/MVC/View/HtmlView.php:203
7 Joomla\CMS\MVC\View\HtmlView->display() JROOT/administrator/components/com_templates/src/View/Style/HtmlView.php:86
8 Joomla\Component\Templates\Administrator\View\Style\HtmlView->display() JROOT/libraries/src/MVC/Controller/BaseController.php:645
9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/administrator/components/com_templates/src/Controller/DisplayController.php:67
10 Joomla\Component\Templates\Administrator\Controller\DisplayController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:678
11 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:143
12 Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
13 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/AdministratorApplication.php:143
14 Joomla\CMS\Application\AdministratorApplication->dispatch() JROOT/libraries/src/Application/AdministratorApplication.php:186
15 Joomla\CMS\Application\AdministratorApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:293
16 Joomla\CMS\Application\CMSApplication->execute() JROOT/administrator/includes/app.php:61
17 require_once() JROOT/administrator/index.php:32