[Q] CyanogenMod 11 google account connection error topic

Hello everyone.I have a Sony xperia ZR running cm 11 kitkat 4.4.4. I flashed my phone with cm11 couple of weeks back and it was working fine till yesterday when it started showing null imei error to solve that issue I flashed cm11 again and the null imei error was solved,but when I tried logging into Google account it showed the can't establish a reliable connection error. I tried editing hosts file which is the easiest way there is but cm11 won't let me edit it even with root editor , I get the "unable to save the file hosts". I tried a couple of other methods no help there either.