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....."