How to stop log4net from creating two log files

Hello,
I am using below code in my web.config and I found there are two log files getting created . 
For some reason every day the logger switches at times to an alternate log file with the filename (which is supposed to be yyyy-mm-dd.log.text) repeated twice. So there are always two log files. 
Please guide me if I am missing something or making any mistake.

















 
 
Thanks,