how can i resolve this issue ?

free some space?

restart client
run -rescan (will take a long time)
I received the same error. I have a 1TB drive, 777 GB free, so it doesn't make any sense. I deleted and redownloaded the blockchain, and that didn't work.
Rescanning now...
No longer getting this error, but am getting a "Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent....."
that error usually means you need to rescan..
as for network status atm, few people looking into it, looks like could be some bug or other issue.
will keep updated.
I'm actually still getting the diskfull error as well....
Thanks for looking into it.