jos-Error: View nicht gefunden [Name, Typ, Präfix]: category, php, contentView

JSite -> dispatch() @ /www/htdocs/w01539f0/OO/index.php:50
JComponentHelper :: renderComponent() @ /www/htdocs/w01539f0/OO/includes/application.php:194
JComponentHelper :: executeComponent() @ /www/htdocs/w01539f0/OO/libraries/joomla/application/component/helper.php:348
require_once() @ /www/htdocs/w01539f0/OO/libraries/joomla/application/component/helper.php:380
JController -> execute() @ /www/htdocs/w01539f0/OO/components/com_content/content.php:16
ContentController -> display() @ /www/htdocs/w01539f0/OO/libraries/joomla/application/component/controller.php:761
JController -> display() @ /www/htdocs/w01539f0/OO/components/com_content/controller.php:74
JController -> getView() @ /www/htdocs/w01539f0/OO/libraries/joomla/application/component/controller.php:677
JError :: raiseError() @ /www/htdocs/w01539f0/OO/libraries/joomla/application/component/controller.php:903
JError :: raise() @ /www/htdocs/w01539f0/OO/libraries/joomla/error/error.php:251