diff --git a/app.py b/app.py
index 7a20d65..fe3a59d 100644
--- a/app.py
+++ b/app.py
@@ -238,7 +238,8 @@ def add_link():
         with get_db_connection() as conn:
             with conn.cursor() as cur:
                 cur.execute(
-                    f"INSERT INTO {table} (url) VALUES (%s) RETURNING id, created_at",
+                    # created_at에 DEFAULT가 없더라도 저장되도록 NOW()를 함께 기록
+                    f"INSERT INTO {table} (url, created_at) VALUES (%s, NOW()) RETURNING id, created_at",
                     (url,),
                 )
                 link_id, created_at = cur.fetchone()
diff --git a/static/app.js b/static/app.js
index 865eb9d..bdac5b1 100644
--- a/static/app.js
+++ b/static/app.js
@@ -118,7 +118,8 @@ async function loadNextPage() {
     const res = await fetch(`/links?limit=${PAGE_SIZE}&offset=${nextOffset}`);
     const data = await res.json();
     if (!res.ok) {
-      throw new Error(data.error || "링크를 불러오지 못했습니다.");
+      const detail = data?.detail ? ` (${data.detail})` : "";
+      throw new Error((data.error || "링크를 불러오지 못했습니다.") + detail);
     }
 
     const items = Array.isArray(data) ? data : data.items || [];
@@ -164,7 +165,8 @@ linkForm.addEventListener("submit", async (event) => {
     });
     const data = await res.json();
     if (!res.ok) {
-      throw new Error(data.error || "저장에 실패했습니다.");
+      const detail = data?.detail ? ` (${data.detail})` : "";
+      throw new Error((data.error || "저장에 실패했습니다.") + detail);
     }
 
     resetPagination();