diff --git a/src/stores/mixin.ts b/src/stores/mixin.ts
index b23252e..02981bb 100644
--- a/src/stores/mixin.ts
+++ b/src/stores/mixin.ts
@@ -1252,7 +1252,15 @@ export const useCounterMixin = defineStore("mixin", () => {
 
   // กรณีมีเฉพาะ date
   function convertDateToAPI(date: Date | null) {
-    return date ? format(date, "yyyy-MM-dd") : null;
+    if (!date) return null;
+
+    const parsedDate = new Date(date);
+
+    if (parsedDate) {
+      return format(parsedDate, "yyyy-MM-dd");
+    } else {
+      return null;
+    }
   }
 
   // กรณี datetime