diff --git a/core/user.go b/core/user.go
index 3affe94..9a7671c 100644
--- a/core/user.go
+++ b/core/user.go
@@ -458,18 +458,22 @@ func fetchWorkIDsAndSeriesData(r *http.Request, id string, category UserWorkCate
 
 	// Build the UserWorkIDs by computing slice bounds and constructing ID strings
 	idCategories := []struct {
+		name          string
 		ids           *[]int
 		idStringField *string
 	}{
 		{
+			name:          "illusts",
 			ids:           &illustIDs,
 			idStringField: &userWorkIDs.IllustrationIDs,
 		},
 		{
+			name:          "manga",
 			ids:           &mangaIDs,
 			idStringField: &userWorkIDs.MangaIDs,
 		},
 		{
+			name:          "novels",
 			ids:           &novelIDs,
 			idStringField: &userWorkIDs.NovelIDs,
 		},
@@ -477,9 +481,12 @@ func fetchWorkIDsAndSeriesData(r *http.Request, id string, category UserWorkCate
 
 	for _, cat := range idCategories {
 		totalItems := len(*cat.ids)
-		start, end, err := computeSliceBounds(page, worksPerPage, totalItems)
+		start, end, err := computeSliceBounds(page, worksPerPage, totalItems, cat.name)
 		if err != nil {
-			return UserWorkIDs{}, WorkCounts{}, nil, err
+			fmt.Printf("Error computing slice bounds for category '%s': %v\n", cat.name, err)
+			// Set idStringField to an empty string so that it's caught by getPopulatedWorks correctly
+			*(cat.idStringField) = ""
+			continue
 		}
 		idsToUse := (*cat.ids)[start:end]
 		var idsBuilder strings.Builder
@@ -660,19 +667,28 @@ func (s *User) parseSocial() error {
 }
 
 // computeSliceBounds is a utility function to compute slice bounds safely
-func computeSliceBounds(page int, worksPerPage float64, totalItems int) (start, end int, err error) {
+func computeSliceBounds(page int, worksPerPage float64, totalItems int, categoryName string) (start, end int, err error) {
+	// fmt.Printf("[DEBUG] Entering computeSliceBounds - page: %d, worksPerPage: %.2f, totalItems: %d, category: %s\n", page, worksPerPage, totalItems, categoryName)
+
 	if totalItems == 0 {
+		// fmt.Printf("[DEBUG] totalItems is 0 for category '%s', returning 0, 0, nil\n", categoryName)
 		return 0, 0, nil
 	}
 
 	maxPages := int(math.Ceil(float64(totalItems) / worksPerPage))
+	// fmt.Printf("[DEBUG] Calculated maxPages: %d for category '%s'\n", maxPages, categoryName)
+
 	if page < 1 || page > maxPages {
-		return 0, 0, i18n.Error("Invalid page number.")
+		// fmt.Printf("[DEBUG] Invalid page number for category '%s'. page: %d, maxPages: %d\n", categoryName, page, maxPages)
+		return 0, 0, fmt.Errorf("Invalid page number for category '%s'", categoryName)
 	}
 
 	start = (page - 1) * int(worksPerPage)
 	end = min(start+int(worksPerPage), totalItems)
 
+	// fmt.Printf("[DEBUG] Calculated start: %d, end: %d for category '%s'\n", start, end, categoryName)
+
+	// fmt.Printf("[DEBUG] Exiting computeSliceBounds successfully for category '%s'\n", categoryName)
 	return start, end, nil
 }
 
diff --git a/i18n/locale/en/code.json b/i18n/locale/en/code.json
index 187a189..f4c2634 100644
--- a/i18n/locale/en/code.json
+++ b/i18n/locale/en/code.json
@@ -28,7 +28,6 @@
   "core/requests.go:lLy9SHFUtQQ": "failed to copy response body: %w",
   "core/requests.go:o8eDPgojH4w": "Incompatible response body",
   "core/requests.go:y3v5nQwdU0s": "All tokens (%d) are timed out, resetting all tokens to their initial good state.\nConsider providing additional tokens in PIXIVFE_TOKEN or reviewing API request level backoff configuration.\nPlease refer the following documentation for additional information:\n- https://pixivfe-docs.pages.dev/hosting/obtaining-pixivfe-token/\n- https://pixivfe-docs.pages.dev/hosting/environment-variables/#exponential-backoff-configuration",
-  "core/user.go:1itpJBE-3VI": "Invalid page number.",
   "core/user.go:T3RwaHcnsYQ": "Invalid work category: %#v. Only \"%s\", \"%s\", \"%s\", \"%s\", \"%s\" and \"%s\" are available",
   "server/audit/audit_init.go:RVQo5OR9IKs": "failed to initialize zap logger: %w",
   "server/audit/audit_init.go:k5XgFtfJlBA": "failed to create response save directory: %w",