diff --git a/backend/src/web/mw_auth.rs b/backend/src/web/mw_auth.rs
index 4df22ae..3cc3720 100644
--- a/backend/src/web/mw_auth.rs
+++ b/backend/src/web/mw_auth.rs
@@ -5,13 +5,14 @@ use axum::{
 };
 use tower_cookies::Cookies;
 
-use crate::{ctx::Ctx, error::LoftError, model::UserRepository, web::AUTH_TOKEN};
+use crate::{
+    ctx::Ctx,
+    error::{LoftError, Result},
+    model::UserRepository,
+    web::AUTH_TOKEN,
+};
 
-pub async fn mw_require_auth(
-    ctx: Result<Ctx, LoftError>,
-    req: Request,
-    next: Next,
-) -> Result<Response, LoftError> {
+pub async fn mw_require_auth(ctx: Result<Ctx>, req: Request, next: Next) -> Result<Response> {
     ctx?;
 
     Ok(next.run(req).await)
@@ -22,7 +23,7 @@ pub async fn mw_ctx_resolver(
     cookies: Cookies,
     mut req: Request,
     next: Next,
-) -> Result<Response, LoftError> {
+) -> Result<Response> {
     let auth_token = cookies.get(AUTH_TOKEN).map(|c| c.value().to_string());
 
     let result_ctx = match auth_token {
@@ -46,7 +47,7 @@ impl<S: Send + Sync> FromRequestParts<S> for Ctx {
     ) -> Result<Self, Self::Rejection> {
         parts
             .extensions
-            .get::<Result<Ctx, LoftError>>()
+            .get::<Result<Ctx>>()
             .ok_or(LoftError::AuthFailCtxNotInRequestExt)?
             .clone()
     }
diff --git a/backend/src/web/routes_file.rs b/backend/src/web/routes_file.rs
index bda0f54..1d4bb87 100644
--- a/backend/src/web/routes_file.rs
+++ b/backend/src/web/routes_file.rs
@@ -27,7 +27,7 @@ async fn upload_file(
     State(file_repository): State<FileRepository>,
     ctx: Ctx,
     mut multipart: Multipart,
-) -> Result<Json<FileRecord>, LoftError> {
+) -> Result<Json<FileRecord>> {
     let mut uploaded: Option<(String, String, usize)> = None;
 
     while let Some(field) = multipart.next_field().await? {
@@ -52,7 +52,7 @@ async fn get_file(
     State(file_repository): State<FileRepository>,
     ctx: Ctx,
     Path(file_id): Path<u64>,
-) -> Result<Json<FileRecord>, LoftError> {
+) -> Result<Json<FileRecord>> {
     let record = file_repository
         .get_file(file_id as i64, ctx.user_id())
         .await?;
@@ -121,7 +121,7 @@ async fn delete_file(
     State(file_repository): State<FileRepository>,
     ctx: Ctx,
     Path(file_id): Path<u64>,
-) -> Result<Json<FileRecord>, LoftError> {
+) -> Result<Json<FileRecord>> {
     let file = file_repository
         .delete_file(file_id as i64, ctx.user_id())
         .await?;
@@ -131,7 +131,7 @@ async fn delete_file(
 async fn list_files(
     State(file_repository): State<FileRepository>,
     ctx: Ctx,
-) -> Result<Json<Vec<FileRecord>>, LoftError> {
+) -> Result<Json<Vec<FileRecord>>> {
     let files = file_repository.list_files(ctx.user_id()).await?;
     Ok(Json(files))
 }
diff --git a/backend/src/web/routes_login.rs b/backend/src/web/routes_login.rs
index a2faf31..dfdb843 100644
--- a/backend/src/web/routes_login.rs
+++ b/backend/src/web/routes_login.rs
@@ -26,7 +26,7 @@ async fn login(
     State(user_repository): State<UserRepository>,
     cookies: Cookies,
     Json(payload): Json<LoginPayload>,
-) -> Result<StatusCode, LoftError> {
+) -> Result<StatusCode> {
     let user = user_repository
         .find_by_username(&payload.username)
         .await?
@@ -53,7 +53,7 @@ async fn login(
 async fn logout(
     State(user_repository): State<UserRepository>,
     cookies: Cookies,
-) -> Result<StatusCode, LoftError> {
+) -> Result<StatusCode> {
     let auth_token = cookies.get(AUTH_TOKEN).map(|c| c.value().to_string());
 
     if let Some(auth_token) = auth_token {
@@ -67,7 +67,7 @@ async fn logout(
 async fn register(
     State(user_repository): State<UserRepository>,
     Json(payload): Json<LoginPayload>,
-) -> Result<StatusCode, LoftError> {
+) -> Result<StatusCode> {
     if user_repository
         .find_by_username(&payload.username)
         .await?