render_header tag

TemplateSyntaxError at /

Invalid block tag: 'render_header'

In template /home/nicu/Documents/facultate/wouso/wouso/resources/static/themes/dark_woods/templates/site_base.html, error at line 109

107 	<div id="header-content">
108 	<div id="header-menu">
109 	{% render_header %}