More informative warning message when severity missing
More informative warning message when severity missing

0312birdzhang/alerta,mrkeng/alerta,mrkeng/alerta,mrkeng/alerta,guardian/alerta,0312birdzhang/alerta,skob/alerta,skob/alerta,mrkeng/alerta,0312birdzhang/alerta,skob/alerta,guardian/alerta,guardian/alerta,skob/alerta,guardian/alerta