Update

src/main.rs

@@ -100,16 +100,24 @@ async fn sign_in(
             .set_ex(uid.to_string(), "1", 60 * 60 * 24) // session exists for 1 day
             .await
             .expect("Failed to store session");
-        HttpResponse::Ok()
+        HttpResponse::SeeOther()
             .cookie(
                 CookieBuilder::new("ses", uid.to_string())
                     .secure(true)
                     .max_age(Duration::hours(24))
                     .finish(),
             )
+            .append_header(("location", "/"))
             .finish()
     } else {
-        HttpResponse::Ok().finish()
+        HttpResponse::BadRequest().body(
+            SignInForm {
+                login: payload.login,
+                not_found: true,
+            }
+            .render()
+            .unwrap_or_default(),
+        )
     }
 }