Log panel Visualization not working properly

not able to see the metrics in visualization while using log panel in grafana 6.4.3 using influx db

need support please

not able to see anything while using log panel in grafana 6.4.3 using elasticsearch. i need support too!!
Is there any course or some text can tell me how to use log panel???Q31FQ4MISCJ%40(%5B5V)OBG(VR|690x250