commented out shield export call

examples/shields/rl/15_train_eval_tune.py

@@ -139,7 +139,7 @@ def main():
 
     ppo(args)
    
-
+    ray.shutdown()
 
 if __name__ == '__main__':
     main()

examples/shields/rl/shieldhandlers.py

@@ -69,7 +69,7 @@ class MiniGridShieldHandler(ShieldHandler):
 
             action_dictionary[state_valuation] = actions_to_be_executed
 
-        stormpy.shields.export_shield(model, shield, "Grid.shield")
+        # stormpy.shields.export_shield(model, shield, "Grid.shield")
        
         return action_dictionary