Add try except block to trigger errors for invalid group names.

src/hdf5_writer.py

@@ -193,6 +193,7 @@ def create_hdf5_file_from_filesystem_path(path_to_input_directory: str,
                 if len(tmp_list) > offset+1:
                     group_name = '/'.join([tmp_list[i] for i in range(offset+1)])   
 
+                try:
                     # Create group called "group_name". Hierarchy of nested groups can be implicitly defined by the forward slashes
                     if not group_name in h5file.keys():                    
                         h5file.create_group(group_name)
@@ -204,6 +205,10 @@ def create_hdf5_file_from_filesystem_path(path_to_input_directory: str,
                         instFoldermsgStart = f'Starting data transfer from instFolder: {group_name}'
                         print(instFoldermsgStart)
 
+                except Exception as inst: 
+                    stdout = inst
+                    logging.error('Failed to create group %s into HDF5: %s', group_name, inst)
+
                 for filenumber, filename in enumerate(filtered_filenames_list):
                     
                     #file_ext = os.path.splitext(filename)[1]