diff --git a/dcm/dcm_core.py b/dcm/dcm_core.py
index 8b92bac..d6dea4e 100644
--- a/dcm/dcm_core.py
+++ b/dcm/dcm_core.py
@@ -565,7 +565,12 @@ def get_examples(cls, content_class=CompetenceTree, markup: str = "json") -> dic
 
     @classmethod
     def from_definition_string(
-        cls, name: str, definition_string: str, content_class, markup: str = "json"
+        cls, 
+        name: str, 
+        definition_string: str, 
+        content_class, 
+        markup: str = "json",
+        debug:bool = False
     ) -> Any:
         """
         Load a DynamicCompetenceMap or Learner instance from a definition string (either JSON or YAML).
@@ -575,7 +580,7 @@ def from_definition_string(
             definition_string (str): The string content of the definition.
             content_class (dataclass_json): The class which will be instantiated with the parsed data.
             markup (str): The markup format of the data. Defaults to 'json'. Supported values are 'json' and 'yaml'.
-
+            debug(bool): if True supply a JSON dump of the data in /tmp/{name}.json
         Returns:
             DynamicCompetenceMap: An instance of DynamicCompetenceMap loaded with the parsed data.
 
@@ -584,7 +589,12 @@ def from_definition_string(
         """
         try:
             data = cls.parse_markup(definition_string, markup)
-            content = content_class.from_dict(data)
+            if debug:
+                # Save the parsed data to a JSON file in /tmp directory
+                debug_file_path = os.path.join('/tmp', f'{name}.json')
+                with open(debug_file_path, 'w') as debug_file:
+                    json.dump(data, debug_file, indent=2,default=str)
+                content = content_class.from_dict(data)
             if isinstance(content, CompetenceTree):
                 return DynamicCompetenceMap(content)
             else:
diff --git a/dcm/dcm_webserver.py b/dcm/dcm_webserver.py
index fa98a15..d08a39d 100644
--- a/dcm/dcm_webserver.py
+++ b/dcm/dcm_webserver.py
@@ -227,7 +227,7 @@ async def render(self, _click_args=None):
                 else:
                     self.learner = item
                     self.assess(item)
-        except BaseException as ex:
+        except Exception as ex:
             self.handle_exception(ex, self.do_trace)
 
     def render_dcm(self, 
diff --git a/tests/test_rwth_aachen_module.py b/tests/test_rwth_aachen_module.py
index 2dfd3f0..2957c7d 100644
--- a/tests/test_rwth_aachen_module.py
+++ b/tests/test_rwth_aachen_module.py
@@ -15,6 +15,7 @@
     CompetenceFacet,
     CompetenceLevel,
     CompetenceTree,
+    DynamicCompetenceMap
 )
 
 class TestModule(Basetest):
@@ -149,11 +150,18 @@ def test_master_informatik(self):
             # Create the competence tree
             competence_tree = self.create_competence_tree(competence_elements, url=url)
             # Pretty print the JSON with specified indentation
-            pretty_json = competence_tree.to_pretty_json()
+            #pretty_json = competence_tree.to_pretty_json()
             yaml_str = competence_tree.to_yaml()
             debug = self.debug
-            # debug=True
+            debug=True
             if debug:
                 print(yaml_str)
             with open("/tmp/rwth_aachen_master_informatik.yaml", "w") as yaml_file:
                 yaml_file.write(yaml_str)
+            dcm=DynamicCompetenceMap.from_definition_string(
+                name="RWTH Aachen Master Informatik",
+                definition_string=yaml_str,
+                content_class=CompetenceTree,
+                markup="yaml",
+                debug=debug) 
+            self.assertIsNotNone(dcm)