fixing startDaq issue with daqInfo

src/python/dm/daq_web_service/service/experimentSessionController.py

@@ -28,9 +28,10 @@ class ExperimentSessionController(DmSessionController):
 	if dataDirectory is None or not len(dataDirectory):
 	    raise InvalidRequest('Missing data directory.')
         dataDirectory = Encoder.decode(dataDirectory)
-        daqInfo = kwargs.get('daqInfo')
+        daqInfo = {}
+        encodedDaqInfo = kwargs.get('daqInfo')
         if daqInfo is not None:
-            daqInfo = Encoder.decode(daqInfo)
+            daqInfo = json.loads(Encoder.decode(encodedDaqInfo))
         response = self.experimentSessionControllerImpl.startDaq(experimentName, dataDirectory, daqInfo).getFullJsonRep()
         self.logger.debug('Returning: %s' % response)
         return response