apt - E: GPG error: http://mega.nz ./ InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)

Running Xubuntu 14.04LTS

Originally, I was getting the following error

E: GPG error: http://mega.nz ./ Release: The following signatures were invalid: NODATA 1 NODATA 2

Did what this answer told me to do, tried updating again. New problem arose.

E: GPG error: http://mega.nz ./ InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)

How do I fix this?

I had the same error. Since its a recent issue, i believe it must have been a problem with the megasync server. I fixed it by going to
/etc/apt/sources.list.d
and then deleting all the files that started with mega using :

sudo rm mega*

Then run:

sudo apt-get update