diff --git a/backend-go/internal/application/services/helpers.go b/backend-go/internal/application/services/helpers.go
index efeb493..4967bce 100644
--- a/backend-go/internal/application/services/helpers.go
+++ b/backend-go/internal/application/services/helpers.go
@@ -12,12 +12,18 @@ func HandleError(c *gin.Context) func(error) any {
 	return func(err error) any {
 		// Check if the error is of type *AppError
 		if appErr, ok := err.(*app_error.AppError); ok {
-			// Use the AppError fields for the JSON response
-			c.JSON(appErr.Status, gin.H{
+			response := gin.H{
 				"code":    appErr.Code,
 				"message": appErr.Message,
-				"details": appErr.Err.Error(), // Original error if available
-			})
+			}
+
+			// Add details if available
+			if appErr.Err != nil {
+				response["details"] = appErr.Err.Error()
+			}
+
+			// Use the AppError fields for the JSON response
+			c.JSON(appErr.Status, response)
 		} else {
 			// Fallback for non-AppError errors
 			c.JSON(http.StatusInternalServerError, gin.H{