diff --git a/app/api/student/resume/confirm/route.theme-contrast.test.ts b/app/api/student/resume/confirm/route.theme-contrast.test.ts
index 6279396f2..9c6325a22 100644
--- a/app/api/student/resume/confirm/route.theme-contrast.test.ts
+++ b/app/api/student/resume/confirm/route.theme-contrast.test.ts
@@ -1,6 +1,14 @@
 import { describe, it, expect, vi, beforeEach, afterEach, beforeAll, afterAll } from 'vitest';
 import { POST } from './route';
 
+vi.mock('@/lib/github-owner-verification', () => ({
+  verifyGitHubOwner: vi.fn().mockResolvedValue({
+    verified: true,
+    status: 200,
+    message: 'OK',
+  }),
+}));
+
 vi.mock('@/lib/mongodb', () => ({
   default: vi.fn(),
 }));
diff --git a/components/dashboard/StatsCard.test.tsx b/components/dashboard/StatsCard.test.tsx
index 68cc9cae8..7b511c190 100644
--- a/components/dashboard/StatsCard.test.tsx
+++ b/components/dashboard/StatsCard.test.tsx
@@ -1,26 +1,15 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
-/* eslint-disable @typescript-eslint/no-unused-vars */
+
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { render, screen } from '@testing-library/react';
 import StatsCard from './StatsCard';
 
 // Mock framer-motion
+
 vi.mock('framer-motion', () => ({
   motion: {
-    div: ({
-      children,
-      whileHover,
-      whileTap,
-      whileInView,
-      initial,
-      animate,
-      exit,
-      transition,
-      viewport,
-      layoutId,
-      ...props
-    }: any) => (
-      <div {...props} data-testid="motion-div">
+    div: ({ children, ...rest }: any) => (
+      <div {...rest} data-testid="motion-div">
         {children}
       </div>
     ),
diff --git a/lib/cache.ts b/lib/cache.ts
index 64f218bea..edbcedbb9 100644
--- a/lib/cache.ts
+++ b/lib/cache.ts
@@ -8,7 +8,6 @@ type CacheItem<T> = {
   value: T;
   expiresAt: number;
 };
-
 /**
  * A Simple in-memory TTL(Time To Live) cache.
  *
@@ -18,16 +17,21 @@ type CacheItem<T> = {
  * @typeParam T - Type of values stored in the cache.
  */
 export class TTLCache<T> {
+  //private store = new Map<string, CacheItem<T>>();
+
   private store = new Map<string, CacheItem<T | Buffer>>();
+
   private cleanupInterval: ReturnType<typeof setInterval> | null = null;
   private readonly maxSize?: number;
-
   private static assertValidKey(key: unknown): asserts key is string {
     if (typeof key !== 'string') {
       throw new TypeError('Cache key must be a string');
     }
-  }
 
+    if (key.trim().length === 0) {
+      throw new TypeError('Cache key cannot be empty');
+    }
+  }
   /**
    * Creates a new TTL cache instance.
    *
@@ -109,7 +113,14 @@ export class TTLCache<T> {
    * const user = cache.get("user:1");
    */
   get(key: string): T | null {
-    TTLCache.assertValidKey(key);
+    //TTLCache.assertValidKey(key);
+    if (key === null || key === undefined) {
+      throw new TypeError('Cache key must be a string');
+    }
+
+    if (typeof key !== 'string') {
+      throw new TypeError('Cache key must be a string');
+    }
 
     const hit = this.store.get(key);
     if (!hit) return null;
@@ -136,7 +147,14 @@ export class TTLCache<T> {
    * }
    */
   has(key: string): boolean {
-    TTLCache.assertValidKey(key);
+    //TTLCache.assertValidKey(key);
+    if (key === null || key === undefined) {
+      throw new TypeError('Cache key must be a string');
+    }
+
+    if (typeof key !== 'string') {
+      throw new TypeError('Cache key must be a string');
+    }
 
     const hit = this.store.get(key);
     if (!hit) return false;
@@ -203,8 +221,11 @@ export class TTLCache<T> {
   }
 
   set(key: string, value: T, ttlMs: number): void {
-    TTLCache.assertValidKey(key);
-    if (key === '') throw new Error('Cache key cannot be empty');
+    //TTLCache.assertValidKey(key);
+    if (typeof key !== 'string' || key.trim().length === 0) {
+      throw new TypeError('Cache key cannot be empty');
+    }
+
     if (ttlMs <= 0) throw new RangeError(`ttlMs must be positive, got ${ttlMs}`);
     if (Number.isNaN(ttlMs)) ttlMs = 60_000;