Array
(
[categoria] => diseno-modelado-automatizacion-simulacion-optimizacion
[idioma] => NULL
[q] => lab4NULL4---materiales-para-el-futuro-y-envases-inteligentes
)
--lab4NULL4---materiales-para-el-futuro-y-envases-inteligentes----0--diseno-modelado-automatizacion-simulacion-optimizacion------------NULL------ERROR!!