diff --git a/src/components/NavBar.tsx b/src/components/NavBar.tsx
index 9e79659..3674c63 100644
--- a/src/components/NavBar.tsx
+++ b/src/components/NavBar.tsx
@@ -1,4 +1,3 @@
-import { useSession } from "next-auth/react";
 import { signOut, useSession } from "next-auth/react";
 import Link from "next/link";
 import { useRouter } from "next/router";
@@ -11,7 +10,6 @@ const NavBar = () => {
   const toggleDropdown = () => {
     setIsDropdownOpen(!isDropdownOpen);
   };
-  const { data: session } = useSession();
 
   const closeDropdown = () => setIsDropdownOpen(false);
 
@@ -84,7 +82,7 @@ const NavBar = () => {
             className="flex items-center justify-center font-bold text-white no-underline transition hover:bg-white/20 rounded-md whitespace-nowrap bg-white/10 flex-[1_0_0%] px-4"
           >
             SignIn
-          </Link>
+          </Link>}
           {
             session?.user.role === "MAINTAINER" && 
             <Link
@@ -95,7 +93,6 @@ const NavBar = () => {
             Test cases
           </Link>
           }
-          </Link>}
           {session && <div
             onClick={() => {
               void signOut();
diff --git a/src/types/global.ts b/src/types/global.ts
index 2d1ee33..f9701e9 100644
--- a/src/types/global.ts
+++ b/src/types/global.ts
@@ -10,7 +10,6 @@ export class Question {
   id = "";
 };
 
-export type QuestionMap = Map<string, Question>;
 
 // todo: dup code
 export type ModifyQuestionProps = {