Type Type Type Type t3.lean:9:16: error: unknown universe 'v' Type t3.lean:14:16: error: unknown universe 'z' t3.lean:16:2: error: invalid namespace declaration, a namespace cannot be declared inside a section Type Type Type t3.lean:26:10: error: invalid namespace declaration, atomic identifier expected Type Type t3.lean:35:2: error: universe level alias 'u' shadows existing global universe level t3.lean:37:16: error: unknown universe 'bla.u'