- minor logging fixes & improvements

src/utils_qualtest.py

@@ -224,15 +224,16 @@ class QualtestBackend:
             # Get response from server
             response = requests.get(url, timeout=(utils.NETWORK_TIMEOUT, 5))
             if response.status_code != 200:
-                utils.log_error("Failed to get audio. Error code: %s" % response.status_code)
+                utils.log_error(f'    Failed to get audio. Error code: {response.status_code}, msg: {response.content}')
                 return False
 
             with open (output_path, 'wb') as f:
                 f.write(response.content)
             
+            utils.log('    Done.')
             return True
         except Exception as err:
-            utils.log_error("Exception when fetching  list: {0}".format(err))
+            utils.log_error(f'    Exception when fetching audio: {str(err)}')
             
             return False