FreeMarker syntax is invalid.

Error while invoking the "runtime" JSP custom tag; see cause exception

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FTL stack trace ("~" means nesting-related):
- Failed at: @liferay_portlet["runtime"] instanceI... [in template "template_id" at line 143, column 65]
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com.liferay.portal.kernel.portlet.PortletContainerException: java.lang.NullPointerException
com.liferay.portal.kernel.portlet.PortletContainerException: java.lang.NullPointerException
com.liferay.portal.kernel.portlet.PortletContainerException: java.lang.NullPointerException
com.liferay.portal.kernel.portlet.PortletContainerException: java.lang.NullPointerException
java.lang.NullPointerException
com.liferay.portal.kernel.portlet.PortletContainerException: java.lang.NullPointerException