Fix NPE due to the missing initialisation of the configuration before…

… instantiating the models #131

src/main/java/org/grobid/service/command/RunTrainingCommand.java

@@ -81,6 +81,10 @@ public void configure(Subparser subparser) {
 
     @Override
     protected void run(Bootstrap bootstrap, Namespace namespace, GrobidQuantitiesConfiguration configuration) throws Exception {
+        String configurationGrobidHome = configuration.getGrobidHome();
+        File grobidHomeOverride = namespace.get(GROBID_HOME_DIRECTORY);
+        initGrobidHome(configurationGrobidHome, grobidHomeOverride);
+        configuration.getModels().stream().forEach(GrobidProperties::addModel);
 
         // we need to execute this after the system has been initialised, or it will crash looking for the wapiti models in the wrong location
         Map<String, AbstractTrainer> trainerMap = new HashMap<>();
@@ -89,11 +93,6 @@ protected void run(Bootstrap bootstrap, Namespace namespace, GrobidQuantitiesCon
         trainerMap.putIfAbsent("values", new ValueTrainer());
         trainerMap.putIfAbsent("quantifiedObject", new QuantifiedObjectTrainer());
 
-        String configurationGrobidHome = configuration.getGrobidHome();
-        File grobidHomeOverride = namespace.get(GROBID_HOME_DIRECTORY);
-        initGrobidHome(configurationGrobidHome, grobidHomeOverride);
-        configuration.getModels().stream().forEach(GrobidProperties::addModel);
-
         String modelName = namespace.get(MODEL_NAME);
         String action = namespace.get(ACTION);
         Boolean print = namespace.get(PRINT);