After a fresh Grav install, Tools>Reports gives 2 linting errors:
/user/themes/quark/blueprints/item.yaml
A colon cannot be used in an unquoted mapping value at line 46 (near "placeholder: For example: myimage.jpg").
/user/themes/quark/blueprints/blog.yaml
Found unknown escape character "\-" at line 6 (near "pattern: "[a-z][a-z0-9_\-]+"").
Grav v1.6.11 - Admin v1.9.7