diff --git a/atsf_server/controller/file.go b/atsf_server/controller/file.go
index 8988989b..24d92217 100644
--- a/atsf_server/controller/file.go
+++ b/atsf_server/controller/file.go
@@ -4,7 +4,6 @@ import (
 	"atsflare/common"
 	"atsflare/model"
 	"atsflare/utils"
-	"fmt"
 	"github.com/gin-gonic/gin"
 	"net/http"
 	"path/filepath"
@@ -96,7 +95,7 @@ func UploadFile(c *gin.Context) {
 		}
 		err = fileObj.Insert()
 		if err != nil {
-			_ = fmt.Errorf(err.Error())
+			_ = err
 		}
 	}
 	c.JSON(http.StatusOK, gin.H{
diff --git a/atsf_server/middleware/cors.go b/atsf_server/middleware/cors.go
index f4737e97..8e9ce771 100644
--- a/atsf_server/middleware/cors.go
+++ b/atsf_server/middleware/cors.go
@@ -7,6 +7,6 @@ import (
 
 func CORS() gin.HandlerFunc {
 	config := cors.DefaultConfig()
-	config.AllowOrigins = []string{"https://atsflare.vercel.app", "http://localhost:3000/"}
+	config.AllowOrigins = []string{"https://atsflare.vercel.app", "http://localhost:3000"}
 	return cors.New(config)
 }
diff --git a/atsf_server/service/update.go b/atsf_server/service/update.go
index 8bb2001e..749a38d9 100644
--- a/atsf_server/service/update.go
+++ b/atsf_server/service/update.go
@@ -6,6 +6,7 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"log/slog"
@@ -805,7 +806,7 @@ func persistDownloadedServerBinary(ctx context.Context, execPath string, release
 	info := buildUploadedServerBinaryView(fileName, common.Version, detectedVersion, time.Now())
 	if !info.ReadyToUpgrade {
 		_ = os.Remove(tempPath)
-		return nil, fmt.Errorf(info.ComparisonMessage)
+		return nil, errors.New(info.ComparisonMessage)
 	}
 
 	return &manualServerBinaryCandidate{