diff --git a/internal/auth/oidc.go b/internal/auth/oidc.go
index 7e96e860..84feec8c 100644
--- a/internal/auth/oidc.go
+++ b/internal/auth/oidc.go
@@ -317,20 +317,23 @@ func (auth *OIDCProvider) PostAuthCallbackHandler(w http.ResponseWriter, r *http
 	code := r.URL.Query().Get("code")
 	oauth2Token, err := auth.oauthConfig.Exchange(r.Context(), code, optRedirectPostAuth(r))
 	if err != nil {
-		gphttp.ServerError(w, r, fmt.Errorf("failed to exchange token: %w", err))
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		gphttp.LogError(r).Msg(fmt.Sprintf("failed to exchange token: %v", err))
 		return
 	}
 
 	idTokenJWT, idToken, err := auth.getIDToken(r.Context(), oauth2Token)
 	if err != nil {
-		gphttp.ServerError(w, r, err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		gphttp.LogError(r).Msg(fmt.Sprintf("failed to get ID token: %v", err))
 		return
 	}
 
 	if oauth2Token.RefreshToken != "" {
 		claims, err := parseClaims(idToken)
 		if err != nil {
-			gphttp.ServerError(w, r, err)
+			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			gphttp.LogError(r).Msg(fmt.Sprintf("failed to parse claims: %v", err))
 			return
 		}
 		session := newSession(claims.Username, claims.Groups)
diff --git a/internal/auth/userpass.go b/internal/auth/userpass.go
index cdbf1ec3..16db865e 100644
--- a/internal/auth/userpass.go
+++ b/internal/auth/userpass.go
@@ -121,7 +121,8 @@ func (auth *UserPassAuth) PostAuthCallbackHandler(w http.ResponseWriter, r *http
 	}
 	token, err := auth.NewToken()
 	if err != nil {
-		gphttp.ServerError(w, r, err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		gphttp.LogError(r).Msg(fmt.Sprintf("failed to generate token: %v", err))
 		return
 	}
 	SetTokenCookie(w, r, auth.TokenCookieName(), token, auth.tokenTTL)
diff --git a/internal/net/gphttp/error.go b/internal/net/gphttp/error.go
deleted file mode 100644
index 8300a5ba..00000000
--- a/internal/net/gphttp/error.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package gphttp
-
-import (
-	"context"
-	"errors"
-	"net/http"
-	"syscall"
-
-	"github.com/yusing/godoxy/internal/net/gphttp/httpheaders"
-)
-
-// ServerError is for handling server errors.
-//
-// It logs the error and returns http.StatusInternalServerError to the client.
-// Status code can be specified as an argument.
-func ServerError(w http.ResponseWriter, r *http.Request, err error, code ...int) {
-	switch {
-	case err == nil,
-		errors.Is(err, context.Canceled),
-		errors.Is(err, syscall.EPIPE),
-		errors.Is(err, syscall.ECONNRESET):
-		return
-	}
-	LogError(r).Msg(err.Error())
-	if httpheaders.IsWebsocket(r.Header) {
-		return
-	}
-	if len(code) == 0 {
-		code = []int{http.StatusInternalServerError}
-	}
-	http.Error(w, http.StatusText(code[0]), code[0])
-}
diff --git a/internal/net/gphttp/server/utils.go b/internal/net/gphttp/server/utils.go
index 76e59836..57f9a7fd 100644
--- a/internal/net/gphttp/server/utils.go
+++ b/internal/net/gphttp/server/utils.go
@@ -1,15 +1,19 @@
 package server
 
 import (
+	"context"
+	"errors"
 	"log"
 	"log/slog"
 	"net/http"
+	"syscall"
 
 	"github.com/quic-go/quic-go/http3"
 	"github.com/rs/zerolog"
 	slogzerolog "github.com/samber/slog-zerolog/v2"
 	"github.com/yusing/godoxy/internal/common"
 	"github.com/yusing/godoxy/internal/net/gphttp"
+	"github.com/yusing/goutils/http/httpheaders"
 )
 
 func advertiseHTTP3(handler http.Handler, h3 *http3.Server) http.Handler {
@@ -17,7 +21,17 @@ func advertiseHTTP3(handler http.Handler, h3 *http3.Server) http.Handler {
 		if r.ProtoMajor < 3 {
 			err := h3.SetQUICHeaders(w.Header())
 			if err != nil {
-				gphttp.ServerError(w, r, err)
+				switch {
+				case errors.Is(err, context.Canceled),
+					errors.Is(err, syscall.EPIPE),
+					errors.Is(err, syscall.ECONNRESET):
+					return
+				}
+				gphttp.LogError(r).Msg(err.Error())
+				if httpheaders.IsWebsocket(r.Header) {
+					return
+				}
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 				return
 			}
 		}