diff --git a/backend/src/online_classroom/session.rs b/backend/src/online_classroom/session.rs
index 3e8f0aa..f1b0e74 100644
--- a/backend/src/online_classroom/session.rs
+++ b/backend/src/online_classroom/session.rs
@@ -42,16 +42,7 @@ pub async fn request(url: String) -> Result<String, String> {
 
     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)
-            }
-
+            log_html(&t);
             Ok(t)
         }
         Err(err) => Err(format!("Error getting text from response: {:?}", err)),
@@ -95,16 +86,7 @@ pub async fn create_user_request(url: String, body: String) -> Result<String, St
 
     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)
-            }
-
+            log_html(&t);
             Ok(t)
         }
         Err(err) => Err(format!("Error getting text from response: {:?}", err)),
@@ -134,7 +116,10 @@ pub async fn register_courses_request(url: String, body: String) -> Result<Strin
     };
 
     match response.text() {
-        Ok(t) => Ok(t),
+        Ok(t) => {
+            log_html(&t);
+            Ok(t)
+        },
         Err(err) => Err(format!("Error getting text from response: {:?}", err)),
     }
 }
@@ -172,27 +157,31 @@ async fn login() -> Result<(), String> {
 
     let jar = CookieJar::new();
 
+    let login_body = format!(
+        "login={}&password={}&submitAuth=&_qf__formLogin=",
+            encode(classroom_user.as_str()).into_owned(),
+            encode(classroom_password.as_str()).into_owned(),
+    );
+
     let response = Request::post(format!("{}/index.php", classroom_url))
         .header("Content-Type", "application/x-www-form-urlencoded")
         .cookie_jar(jar.clone())
-        .body(format!(
-            "login={}&password={}&submitAuth=&_qf__formLogin=",
-            encode(classroom_user.as_str()),
-            encode(classroom_password.as_str()),
-        ))
+        .body(login_body)
         .unwrap()
         .send();
 
     match response {
         Ok(mut r) => {
             if r.status() == isahc::http::StatusCode::FOUND {
+                // TODO: Even if this is a 302, it might not be a successful login
+                // check Set-Cookie header
                 SESSION_COOKIE.write().unwrap().jar = jar.clone();
                 Ok(())
             } else {
                 // Write html to file
                 match r.text() {
                     Ok(t) => {
-                        log_html(t);
+                        log_html(&t);
                     }
                     Err(err) => {
                         return Err(format!("Error getting text from login response: {:?}", err))
@@ -206,13 +195,13 @@ async fn login() -> Result<(), String> {
     }
 }
 
-fn log_html(html: String) {
+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);
+    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 1417610..3e1ba07 100644
--- a/frontend/src/OnlineClassroom/ClassroomVinculation.tsx
+++ b/frontend/src/OnlineClassroom/ClassroomVinculation.tsx
@@ -29,12 +29,12 @@ export function ClassroomVinculation(props: {
                     setClassroomUsers([]);
                     setStatus(LoadingStatus.Error);
                     console.error(response.data);
-                    setError(response.data.Err.reason);
+                    setError(response.data.Error.reason);
                 }
             })
             .catch((err: AxiosError<JsonResult<Array<ClassroomRegistrationUser>>>) => {
                 console.error(err);
-                setError(`Error: ${err.response?.data.Err.reason ?? err.message}`);
+                setError(`Error: ${err.response?.data?.Error?.reason ?? err.message}`);
                 setStatus(LoadingStatus.Error);
             });
     };
@@ -112,9 +112,9 @@ function ClassroomSingleUser(props: {
                     setStatus(LoadingStatus.Ok);
                     props.onLink(parseInt(props.user.user_id, 10), props.user.username);
                 } else {
-                    console.error(response.data);
-                    setError(response.data.Err.reason);
                     setStatus(LoadingStatus.Error);
+                    console.error(response.data);
+                    setError(response.data.Error.reason);
                 }
             })
             .catch((err) => {
diff --git a/frontend/src/types/JsonResult.ts b/frontend/src/types/JsonResult.ts
index 553f6c5..4344d57 100644
--- a/frontend/src/types/JsonResult.ts
+++ b/frontend/src/types/JsonResult.ts
@@ -1,6 +1,6 @@
 export type JsonResult<T> = {
     Ok: T,
-    Err: {
+    Error: {
         reason: string
     }
 };