I installed latest Angular CLI and was trying to create a new app i am getting the below error. I uninstalled , cleaned cache , cleaned by forcing it , installed , updated
This happened to me after updating the project from v6 to v7. However, I missed updating @schematics/angular to a newer version. Apparently, there was some compatibility mismatch that wasn't noted in the package.jsons that caused this issue.
The best way I've found to figure out what the versions of stuff should be is to create a new project with the version of Angular you are trying to use. Once created, look at it's package.json to figure what versions should be compatible with what.