fixed a few errors

src/app/api/game/[code]/route.ts

@@ -93,7 +93,7 @@ export async function POST(
     
     if (error instanceof ZodError) {
       return NextResponse.json(
-        { error: error.errors[0].message },
+        { error: error.issues[0].message },
         { status: 400 }
       );
     }

src/app/api/room/[code]/route.ts

@@ -94,7 +94,7 @@ export async function POST(
     console.error('Room action error:', error);
     
     if (error instanceof ZodError) {
-      return NextResponse.json({ error: error.errors[0].message }, { status: 400 });
+      return NextResponse.json({ error: error.issues[0].message }, { status: 400 });
     }
     
     return NextResponse.json({ error: 'Invalid request' }, { status: 400 });