fixed ExperimentsessionController.startDaq

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

@@ -30,7 +30,7 @@ class ExperimentSessionController(DmSessionController):
         dataDirectory = Encoder.decode(dataDirectory)
         daqInfo = {}
         encodedDaqInfo = kwargs.get('daqInfo')
-        if daqInfo is not None:
+        if encodedDaqInfo is not None:
             daqInfo = json.loads(Encoder.decode(encodedDaqInfo))
         response = self.experimentSessionControllerImpl.startDaq(experimentName, dataDirectory, daqInfo).getFullJsonRep()
         self.logger.debug('Returning: %s' % response)