Error 500: Internal Server Error

URI
/articulos/informacionArticulo/559
Class
java.lang.NullPointerException
Message
Cannot get property 'titulo' on null object

Trace

    Line | Method
->>   56 | runWorker in /articulos/informacionArticulo.gsp
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 

Caused by NullPointerException: Cannot get property 'titulo' on null object
->>   35 | doCall    in gsp_esid_articulosinformacionArticulo_gsp$_run_closure2
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|     75 | run       in gsp_esid_articulosinformacionArticulo_gsp
|   1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
|    615 | run       in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run . . . in java.lang.Thread