diff --git a/upload/upload.go b/upload/upload.go
index 150bff4..a79e259 100644
--- a/upload/upload.go
+++ b/upload/upload.go
@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"github.com/1f349/bluebell/database"
 	"github.com/1f349/bluebell/hook"
-	"github.com/1f349/bluebell/logger"
 	"github.com/1f349/bluebell/validation"
 	"github.com/1f349/syncmap"
 	"github.com/dustin/go-humanize"
@@ -78,7 +77,11 @@ func (h *Handler) Handle(rw http.ResponseWriter, req *http.Request, params httpr
 
 	err = h.extractTarGzUpload(fileData, site, branch)
 	if err != nil {
-		http.Error(rw, fmt.Sprintf("Invalid upload: %s", err), http.StatusBadRequest)
+		if errors.Unwrap(err) == nil {
+			http.Error(rw, fmt.Sprintf("Invalid upload: %s", err), http.StatusBadRequest)
+		} else {
+			http.Error(rw, "Invalid upload: [Internal Server Error]", http.StatusBadRequest)
+		}
 		return
 	}
 
@@ -98,7 +101,7 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 
 	_, err := h.db.GetSiteByDomain(context.Background(), site)
 	if err != nil {
-		return userSafeErrorf("invalid site: %w", err)
+		return fmt.Errorf("invalid site: %w", err)
 	}
 
 	key := site + "@" + branch
@@ -121,23 +124,23 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 	// try the new "old@[...]" and old "@[...].old" paths
 	err = h.storageFs.RemoveAll(siteBranchPath + ".old")
 	if err != nil && !errors.Is(err, fs.ErrNotExist) {
-		return userSafeErrorf("failed to remove old site branch %s: %w", siteBranchPath, err)
+		return fmt.Errorf("failed to remove old site branch %s: %w", siteBranchPath, err)
 	}
 	err = h.storageFs.RemoveAll(siteBranchOldPath)
 	if err != nil && !errors.Is(err, fs.ErrNotExist) {
-		return userSafeErrorf("failed to remove old site branch %s: %w", siteBranchPath, err)
+		return fmt.Errorf("failed to remove old site branch %s: %w", siteBranchPath, err)
 	}
 
 	err = h.storageFs.MkdirAll(siteBranchWorkPath, fs.ModePerm)
 	if err != nil {
-		return userSafeErrorf("failed to make site directory: %w", err)
+		return fmt.Errorf("failed to make site directory: %w", err)
 	}
 	branchFs := afero.NewBasePathFs(h.storageFs, siteBranchWorkPath)
 
 	// decompress gzip wrapper
 	gzipReader, err := gzip.NewReader(fileData)
 	if err != nil {
-		return userSafeErrorf("invalid gzip file: %w", err)
+		return fmt.Errorf("invalid gzip file: %w", err)
 	}
 
 	// parse tar encoding
@@ -149,12 +152,12 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 			break
 		}
 		if err != nil {
-			return userSafeErrorf("invalid tar archive: %w", err)
+			return fmt.Errorf("invalid tar archive: %w", err)
 		}
 
 		err = branchFs.MkdirAll(filepath.Dir(next.Name), fs.ModePerm)
 		if err != nil {
-			return userSafeErrorf("failed to make directory tree: %w", err)
+			return fmt.Errorf("failed to make directory tree: %w", err)
 		}
 
 		if next.FileInfo().IsDir() {
@@ -163,12 +166,12 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 
 		create, err := branchFs.Create(next.Name)
 		if err != nil {
-			return userSafeErrorf("failed to create output file: '%s': %w", next.Name, err)
+			return fmt.Errorf("failed to create output file: '%s': %w", next.Name, err)
 		}
 
 		_, err = io.Copy(create, tarReader)
 		if err != nil {
-			return userSafeErrorf("failed to copy from archive to output file: '%s': %w", next.Name, err)
+			return fmt.Errorf("failed to copy from archive to output file: '%s': %w", next.Name, err)
 		}
 	}
 
@@ -182,12 +185,12 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 
 	err = h.storageFs.Rename(siteBranchPath, siteBranchOldPath)
 	if err != nil && !errors.Is(err, fs.ErrNotExist) {
-		return userSafeErrorf("failed to save an old copy of the site: %w", err)
+		return fmt.Errorf("failed to save an old copy of the site: %w", err)
 	}
 
 	err = h.storageFs.Rename(siteBranchWorkPath, siteBranchPath)
 	if err != nil && !errors.Is(err, fs.ErrNotExist) {
-		return userSafeErrorf("failed to save an old copy of the site: %w", err)
+		return fmt.Errorf("failed to save an old copy of the site: %w", err)
 	}
 
 	n := time.Now().UTC()
@@ -207,16 +210,3 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 	}
 	return nil
 }
-
-func userSafeErrorf(format string, args ...any) error {
-	logger.Logger.Helper()
-	logger.Logger.Error(fmt.Errorf(format, args))
-
-	for i := range args {
-		if _, ok := args[i].(error); ok {
-			args[i] = "[Internal Server Error]"
-		}
-	}
-
-	return fmt.Errorf(format, args)
-}