j'ai une erreur quand je selectionne le resultat MATRIX_FISHING_MORTALITY_PER_GROUP

ERROR|11:45:53,678|InProcessSimulatorLauncher.java|484|localSimulateSameThread|Error during simulation
java.lang.NullPointerException
    at scripts.SiMatrix.fishingMortalityPerGroup_aroundBody98(SiMatrix.java:1946)
    at scripts.SiMatrix$AjcClosure99.run(SiMatrix.java:1)
    at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:149)
    at fr.ifremer.isisfish.util.IsisCache.realCall(IsisCache.java:202)
    at fr.ifremer.isisfish.util.IsisCache.get(IsisCache.java:143)
    at fr.ifremer.isisfish.aspect.CacheAspect.call(CacheAspect.java:73)
    at scripts.SiMatrix.fishingMortalityPerGroup(SiMatrix.java:1895)
    at simulators.DefaultSimulator.computeMonth(DefaultSimulator.java:515)
    at simulators.DefaultSimulator.simulate(DefaultSimulator.java:218)
    at simulators.SimulatorEffortByCell.simulate(SimulatorEffortByCell.java:51)
    at fr.ifremer.isisfish.simulator.launcher.InProcessSimulatorLauncher.localSimulateSameThread(InProcessSimulatorLauncher.java:441)
    at fr.ifremer.isisfish.simulator.launcher.InProcessSimulatorLauncher$SimThread.run(InProcessSimulatorLauncher.java:271)
INFO|11:45:53,694|InProcessSimulatorLauncher.java|513|localSimulateSameThread|Simulation time: 29.538
INFO|11:45:53,905|InProcessSimulatorLauncher.java|202|message|Simulation terminée
INFO|11:45:53,906|SimulationControl.java|206|setText|Simulation terminée