the error last message is :
[2019-09-03 12:13:31] request.CRITICAL: Uncaught PHP Exception Exception: "Could not find template "j_slider"" at /homepages/19/d620206614/htdocs/yakee1.de/vendor/contao/core-bundle/src/Resources/contao/library/Contao/TemplateLoader.php line 160 {"exception":"[object] (Exception(code: 0): Could not find template "j_slider" at /homepages/19/d620206614/htdocs/yakee1.de/vendor/contao/core-bundle/src/Resources/contao/library/Contao/TemplateLoader.php:160)"} []
How i can fix j_slider problem?