TypeError: /Datos/httpd_frontal/app/views/includes/mixins.jade:97
    95| 			| !{uri}

    96| 	else

  > 97| 		if uri['@language'].toUpperCase() == 'ES'

    98| 			| !{uri['@value']}     

    99| 

    100| mixin relations(relations,clase)


Cannot read properties of undefined (reading 'toUpperCase')
    at Object.jade_mixins.pretty_label_for_uri (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:884:23)
    at Object.eval (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:485:36)
    at Object.jade_mixins.label (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:515:4)
    at Object.jade_mixins.literal_or_link (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:777:21)
    at Object.eval (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:6220:31)
    at Object.eval (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:6257:4)
    at Object.jade_mixins.draw_table (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:6534:4)
    at eval (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:8332:26)
    at eval (eval at exports.compile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:179:8), <anonymous>:9621:22)
    at res (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:180:38)
    at Object.exports.render (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:305:10)
    at Object.exports.renderFile (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:341:18)
    at View.exports.renderFile [as engine] (/Datos/httpd_frontal/node_modules/jade/lib/jade.js:326:21)
    at View.render (/Datos/httpd_frontal/node_modules/express/lib/view.js:135:8)
    at tryRender (/Datos/httpd_frontal/node_modules/express/lib/application.js:640:10)
    at Function.render (/Datos/httpd_frontal/node_modules/express/lib/application.js:592:3)