In a templateSet, a previous include of a JSP, which was working in 6.6, is no more working while migrating the module in 7.X
The include was previously done in the JSP which was in a different module, in order to override one of the labels.
To include the JSP, use the classical templating mechanism.
Instead of including the JSP in another JSP, put the component in a page template or in the base template (using repository.xml or the Studio)
To override the label, do it in the templateSet.