Erro

exception 'RuntimeException' with message 'Error decoding JSON data: Syntax error' in /home/oabitabuna/www/libraries/vendor/joomla/registry/src/Format/Json.php:78 Stack trace: #0 /home/oabitabuna/www/libraries/vendor/joomla/registry/src/Registry.php(370): Joomla\Registry\Format\Json->stringToObject('{show_title:,li...', Array) #1 /home/oabitabuna/www/libraries/vendor/joomla/registry/src/Registry.php(76): Joomla\Registry\Registry->loadString('{show_title:,li...') #2 /home/oabitabuna/www/components/com_content/models/article.php(162): Joomla\Registry\Registry->__construct('{show_title:,li...') #3 /home/oabitabuna/www/libraries/src/MVC/View/HtmlView.php(423): ContentModelArticle->getItem() #4 /home/oabitabuna/www/components/com_content/views/article/view.html.php(42): Joomla\CMS\MVC\View\HtmlView->get('Item') #5 /home/oabitabuna/www/libraries/src/Cache/Controller/ViewController.php(102): ContentViewArticle->display() #6 /home/oabitabuna/www/libraries/src/MVC/Controller/BaseController.php(663): Joomla\CMS\Cache\Controller\ViewController->get(Object(ContentViewArticle), 'display') #7 /home/oabitabuna/www/components/com_content/controller.php(113): Joomla\CMS\MVC\Controller\BaseController->display(true, Array) #8 /home/oabitabuna/www/libraries/src/MVC/Controller/BaseController.php(710): ContentController->display() #9 /home/oabitabuna/www/components/com_content/content.php(43): Joomla\CMS\MVC\Controller\BaseController->execute(NULL) #10 /home/oabitabuna/www/libraries/src/Component/ComponentHelper.php(382): require_once('/home/oabitabun...') #11 /home/oabitabuna/www/libraries/src/Component/ComponentHelper.php(357): Joomla\CMS\Component\ComponentHelper::executeComponent('/home/oabitabun...') #12 /home/oabitabuna/www/libraries/src/Application/SiteApplication.php(194): Joomla\CMS\Component\ComponentHelper::renderComponent('com_content') #13 /home/oabitabuna/www/libraries/src/Application/SiteApplication.php(233): Joomla\CMS\Application\SiteApplication->dispatch() #14 /home/oabitabuna/www/libraries/src/Application/CMSApplication.php(195): Joomla\CMS\Application\SiteApplication->doExecute() #15 /home/oabitabuna/www/index.php(49): Joomla\CMS\Application\CMSApplication->execute() #16 {main}