Remove required.

src/pages/api/users/index.ts

@@ -25,10 +25,7 @@ const schema = {
     username: yup.string().max(255).required(),
     password: yup.string().required(),
     id: yup.string().uuid(),
-    role: yup
-      .string()
-      .matches(/admin|user|view-only/i)
-      .required(),
+    role: yup.string().matches(/admin|user|view-only/i),
   }),
 };