Workspace disk quota reached unknowingly!



I have a workspace with 3 source codes and barely occupy 5mb. I accidentally ran the command “sudo apt-get upgrade” and unknowingly pressed Y. Still it occupied 100-200mb of my workspace. The next time I opened my IDE, it said that I reached my disk quota and I am in read mode. Even though I have more than 1 gb of free space I am facing this problem. Please someone help!