I can't login to agora service RTM even though i generate token in the backend

Question

I can't login to agora service RTM even though i generate token in the backend and also i set up my appId and certificateId correctly

I get this error:

Ins#2 RTM:ERROR [UTC_Time: 01-06 01:12:48.603][uid: 10]get edge info error Error Code -10012, server Code 26 - Login RTM service was rejected due to server error.apCode is 26, unexpected code.. +0ms

Rtm.jsx:21 RtmUnavailableError: Error Code -10012, server Code 26 - Login RTM service was rejected due to server error.apCode is 26, unexpected code.

here is the component where i try to login to RTM service:

const { RTM } = AgoraRTM;
  const rtmClient = new RTM("dca3bcedaaeb4bde9f618461df7f2aff","10");

  const initRtm = async () => {
    const response = await fetch('http://localhost:4000/realtime-token');
    const token = await response.json();
    rtmClient.login({token})
      .then(() => {
        console.log("RTM client logged in successfully");
      })
      .catch((error) => {
        console.log(error);
      });
  }
  initRtm();

the code below i generate the token via buildToken function:

app.get('/realtime-token', (req, res) => {
    const APP_ID = 'dca3bcedaaeb4bde9f618461df7f2aff';
    const APP_CERTIFICATE = 'db54959bc19e4b78a3ae948c76da6b86';
    try {
        const uid = "10";
        const currentTimestamp = Math.floor(Date.now() / 1000);
        const privilegeExpiredTs = currentTimestamp + 36000; // Reduced to 1 hour for testing
        
        const token = RtmTokenBuilder.buildToken(
            APP_ID,
            APP_CERTIFICATE,
            uid,
            privilegeExpiredTs
        );
        
        console.log('Generated token:', token);
        console.log('Token expiry:', new Date(privilegeExpiredTs * 1000));
        return res.json(token);
    } catch (error) {
        console.error('Token generation error:', error);
        return res.status(500).json({ error: error.message });
    }
});