Argument of type '(ps: SchemaType<{ readonly type: "object"; readonly properties: { readonly userId: { readonly type: "string"; readonly format: "misskey:id"; }; readonly groupId: { readonly type: "string"; readonly format: "misskey:id"; }; readonly limit: { ...; }; readonly sinceId: { ...; }; readonly untilId: { ...; }; readonly mar...' is not assignable to parameter of type 'Executor<{ readonly tags: readonly ["messaging"]; readonly requireCredential: true; readonly kind: "read:messaging"; readonly res: { readonly type: "array"; readonly optional: false; readonly nullable: false; readonly items: { ...; }; }; readonly errors: { ...; }; }, { ...; }>'.

Not all code paths return a value.