Make serve_overview resistant against missing karabo-da in data-mapping

webservice/serve_overview.py

@@ -250,7 +250,7 @@ class RequestHandler(BaseHTTPRequestHandler):
             tsize = 0
             for run in runs:
                 run = int(run)
-                if detector not in cal_config['data-mapping']:
+                if 'karabo-da' not in cal_config['data-mapping'].get(detector, {}):
                     continue
                 # ToDo calculate tsize based on selected karabo-da
                 for mp in cal_config['data-mapping'][detector]['karabo-da']: