Resolve "release v1.4.0"

Closes #317 (closed)

mlair/run_modules/post_processing.py

@@ -390,7 +390,7 @@ class PostProcessing(RunEnvironment):
                                                    use_multiprocessing=True, verbose=0, steps=1)
         path = self.data_store.get("model_path")
         with open(os.path.join(path, "test_scores.txt"), "a") as f:
-            for index, item in enumerate(test_score):
+            for index, item in enumerate(to_list(test_score)):
                 logging.info(f"{self.model.metrics_names[index]} (test), {item}")
                 f.write(f"{self.model.metrics_names[index]}, {item}\n")