A problem has occured

THIAM_HUATTAN
Valued Contributor
I am using the Community version of Databricks, and even though how much I clear and delete my items, notebooks, the below message appear when I want to insert a new cell in the notebook. Where can I see my usage and quota?
 
A problem has occured
Server error: Workspace quota exceeded (using 111 of 100 MB allowed). You must delete some items from your Workspace, such as notebooks, to continue.