diff --git a/backend/src/online_classroom/session.rs b/backend/src/online_classroom/session.rs
index 1d09662..3e8f0aa 100644
--- a/backend/src/online_classroom/session.rs
+++ b/backend/src/online_classroom/session.rs
@@ -1,7 +1,7 @@
 use chrono::{DateTime, Local, TimeZone, Utc};
 use lazy_static::lazy_static;
-use urlencoding::encode;
 use std::time::{SystemTime, UNIX_EPOCH};
+use urlencoding::encode;
 
 use isahc::{cookies::CookieJar, prelude::*, Request};
 use std::sync::RwLock;
@@ -106,7 +106,7 @@ pub async fn create_user_request(url: String, body: String) -> Result<String, St
             }
 
             Ok(t)
-        },
+        }
         Err(err) => Err(format!("Error getting text from response: {:?}", err)),
     }
 }
@@ -134,19 +134,7 @@ pub async fn register_courses_request(url: String, body: String) -> Result<Strin
     };
 
     match response.text() {
-        Ok(t) => {
-            // Get current time and date in iso
-            let now: DateTime<Local> = Local::now();
-            let now = now.to_rfc3339();
-
-            // Write html to file
-            let r = std::fs::write(format!("request-logs/{}.html", now), &t);
-            if let Err(err) = r {
-                eprintln!("Error writing request html to file: {:?}", err)
-            }
-
-            Ok(t)
-        },
+        Ok(t) => Ok(t),
         Err(err) => Err(format!("Error getting text from response: {:?}", err)),
     }
 }
@@ -196,10 +184,36 @@ async fn login() -> Result<(), String> {
         .send();
 
     match response {
-        Ok(_) => {
-            SESSION_COOKIE.write().unwrap().jar = jar.clone();
-            Ok(())
+        Ok(mut r) => {
+            if r.status() == isahc::http::StatusCode::FOUND {
+                SESSION_COOKIE.write().unwrap().jar = jar.clone();
+                Ok(())
+            } else {
+                // Write html to file
+                match r.text() {
+                    Ok(t) => {
+                        log_html(t);
+                    }
+                    Err(err) => {
+                        return Err(format!("Error getting text from login response: {:?}", err))
+                    }
+                };
+
+                Err(format!("Error connecting to online classroom: not 302"))
+            }
         }
         Err(error) => Err(format!("Error connecting to online classroom: {:?}", error)),
     }
 }
+
+fn log_html(html: String) {
+    // Get current time and date in iso
+    let now: DateTime<Local> = Local::now();
+    let now = now.to_rfc3339();
+
+    // Write html to file
+    let r = std::fs::write(format!("request-logs/{}.html", now), &html);
+    if let Err(err) = r {
+        eprintln!("Error writing request html to file: {:?}", err)
+    }
+}
diff --git a/frontend/src/OnlineClassroom/ClassroomVinculation.tsx b/frontend/src/OnlineClassroom/ClassroomVinculation.tsx
index 31e1569..1417610 100644
--- a/frontend/src/OnlineClassroom/ClassroomVinculation.tsx
+++ b/frontend/src/OnlineClassroom/ClassroomVinculation.tsx
@@ -6,30 +6,37 @@ import { LoadingStatus, backend, useLoading, wait } from "../utils/functions";
 import { LinkIcon } from "../icons/LinkIcon";
 import { For, Show, createSignal, onMount } from "solid-js";
 import { LoadingIcon } from "../icons/LoadingIcon";
+import { AxiosError } from "axios";
 
-type Status = "Init" | "Ok" | "Loading" | "Error";
 export function ClassroomVinculation(props: {
     person_surname: string,
     personId: number,
     onLink: (classroom_id: number, classroom_username: string) => void,
 }) {
     const [classroomUsers, setClassroomUsers] = createSignal<ClassroomRegistrationUser[]>([]);
-    const [error, setError] = createSignal("");
-    const [status, setStatus] = createSignal<Status>("Init");
+    const {status, setStatus, error, setError} = useLoading();
 
     const loadUsers = async() => {
-        setStatus("Loading");
-        const response = await fetch(`${import.meta.env.VITE_BACKEND_URL}/api/classroom/users/${encodeURIComponent(props.person_surname)}`);
-        const json: JsonResult<Array<ClassroomRegistrationUser>> = await response.json();
+        setClassroomUsers([]);
+        setStatus(LoadingStatus.Loading);
 
-        if (response.ok) {
-            setClassroomUsers(json.Ok);
-            setStatus("Ok");
-        } else {
-            console.error("Error loading users", json);
-            setError(json.Err.reason);
-            setStatus("Error");
-        }
+        backend.get<JsonResult<Array<ClassroomRegistrationUser>>>(`/api/classroom/users/${encodeURIComponent(props.person_surname)}`)
+            .then((response) => {
+                if (response.status === 200) {
+                    setClassroomUsers(response.data.Ok);
+                    setStatus(LoadingStatus.Ok);
+                } else {
+                    setClassroomUsers([]);
+                    setStatus(LoadingStatus.Error);
+                    console.error(response.data);
+                    setError(response.data.Err.reason);
+                }
+            })
+            .catch((err: AxiosError<JsonResult<Array<ClassroomRegistrationUser>>>) => {
+                console.error(err);
+                setError(`Error: ${err.response?.data.Err.reason ?? err.message}`);
+                setStatus(LoadingStatus.Error);
+            });
     };
 
     onMount(loadUsers);
@@ -40,13 +47,13 @@ export function ClassroomVinculation(props: {
                 Vincule un usuario existente:
             </p>
 
-            <Show when={status() === "Loading"}>
+            <Show when={status() === LoadingStatus.Loading}>
                 <div class="text-center h-12 scale-150">
                     <LoadingIcon class="animate-spin" fill="var(--c-primary)" />
                 </div>
             </Show>
 
-            <Show when={status() === "Ok"}>
+            <Show when={status() === LoadingStatus.Ok}>
                 <Show when={classroomUsers().length === 0}>
                     <div class="px-4 pb-2">
                         <div class="text-center pt-6 pb-4">
@@ -66,7 +73,7 @@ export function ClassroomVinculation(props: {
                 </For>
             </Show>
 
-            <Show when={status() === "Error"}>
+            <Show when={status() === LoadingStatus.Error}>
                 <div class="px-4 pb-2 text-c-error">
                     <div class="text-center pt-6 pb-4">
                         <XcircleIcon class="scale-[200%]" fill="var(--c-error)" />