Fetch / Timeout issue with Cloud Save API Unity and Nextjs 15

I’m building a Next.js route that fetches leaderboard data and then queries the Cloud Save API for each player’s public Email item.

The issue. TypeError: fetch failed [cause]: [Error [ConnectTimeoutError]: Connect Timeout Error (attempted address: cloud-save.services.api.unity.com:443, timeout: 10000ms)] { code: 'UND_ERR_CONNECT_TIMEOUT' }

Here's the code

export async function GET() {
  const bearerToken = await getBearerToken();

  const res = await fetch(
    `https://leaderboards.services.api.unity.com/v1/projects/${UNITY_PROJECT_ID_FRED}/leaderboards/luxembourg/scores?limit=1000`,
    {
      headers: {
        Authorization: `Bearer ${bearerToken}`,
        'Content-Type': 'application/json',
      },
    }
  );

  if (!res.ok) {
    return NextResponse.json(
      { error: 'Failed to fetch leaderboard' },
      { status: res.status }
    );
  }

  const leaderboard: LeaderboardResponse = await res.json();
  const playerIds = leaderboard.results?.map((r) => r.playerId) ?? [];

  const emails = await Promise.all(
    playerIds.map(async (playerId: string) => {
      const emailRes = await fetch(
        `https://cloud-save.services.api.unity.com/v1/data/projects/${UNITY_PROJECT_ID_FRED}/players/${playerId}/public/items?keys=Email`,
        {
          headers: {
            Authorization: `Bearer ${bearerToken}`,
            'Content-Type': 'application/json',
          },
        }
      );

      if (!emailRes.ok) {
        return { playerId, email: null };
      }

      const data = await emailRes.json();
      const emailItem = data.results?.find((r) => r.key === 'Email');
      return { playerId, email: emailItem?.value ?? null };
    })
  );

  emails.forEach((e) => console.log(e.email));

  return NextResponse.json({ emails });
}

Thanks

On the client side, I have a button that downloads a CSV, but it doesn’t work because of a timeout.