Not able to duplicate project

hi all, getting the following message when i try to duplicate my project. any thoughts on what could be happening?

Save copy error
Problem communicating with server.
HTTP status: 422, server message:

Hello @o.liu.emily7 and welcome to the community :tada:
Based on our records you are on the free plan that offers 100 MB Account Storage. By duplicating a project maybe you are exceeding this limit so it returns an error. You can check your account storage on the account settings.