16-nov 17:42:23 ERROR (Log4JLoggerFactory.java:error:96) Template processing error: "Expression cmsfn.getContent is undefined on line 16, column 80 in leroyMerlinKit/templates/mainLM.ftl."

Expression cmsfn.getContent is undefined on line 16, column 80 in leroyMerlinKit/templates/mainLM.ftl.
The problematic instruction:
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==> assignment: tiendas=cmsfn.getContent("data", "/tienda") [on line 16, column 1 in leroyMerlinKit/templates/mainLM.ftl]
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Java backtrace for programmers:
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freemarker.core.InvalidReferenceException: Expression cmsfn.getContent is undefined on line 16, column 80 in leroyMerlinKit/templates/mainLM.ftl.
        at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:125)
        at freemarker.core.TemplateObject.invalidTypeException(TemplateObject.java:135)
        at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:114)
        at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
        at freemarker.core.Assignment.accept(Assignment.java:90)
        at freemarker.core.Environment.visit(Environment.java:221)
        at freemarker.core.MixedContent.accept(MixedContent.java:92)
        at freemarker.core.Environment.visit(Environment.java:221)
        at freemarker.core.Environment.process(Environment.java:199)