i have a problem in react native expo push notifications
the main goal of my app is that fetchs data from a google sheet file and display it
in this code the i have fetch method that checks every 20 seconds if new items added update the data

  const fetchData = async () => {
    setIsFetching(true); 
    try {
      const data = await FetchData();
      setValue(data);

      const newLength = data.length; 
      let hasNewItems = false; 

      if (data && newLength > prevLengthRef.current) {
        console.log("New Order Received:",newLength - prevLengthRef.current,"new items added");
        await sendNotification(expoPushToken);
        hasNewItems = true; // Set flag if new items found
        setInitialLength(newLength);
        prevLengthRef.current = newLength;
      } else {
        console.log("No new orders received.");
      }
      // }
    } catch (error) {
      console.error("Error:", error.message);
    } 

in this code it execute the function every 20seconds

  fetchData(); // Initial fetch

  const intervalId = setInterval(fetchData, 20000); // Fetch data every 20 seconds

  return () => clearInterval(intervalId);
}, []); 

this is function for sending notification

  const sendNotification = async () => {
    try {
      console.log("Sending push notification...");
      // notification message
      const message = {
        to: expoPushToken,
        sound: "default",
        title: "New Order ",
        body: "Open the app new order received ????",
      };

      await fetch("https://exp.host/--/api/v2/push/send", {
        method: "POST",
        headers: {
          host: "exp.host",
          accept: "application/json",
          "accept-encoding": "gzip, deflate",
          "content-type": "application/json",
        },
        body: JSON.stringify(message),
      });
      console.log("Notification sent successfully!");
    } catch (error) {
      console.error("Error sending notification:", error);
      Alert.alert("Error", "Failed to send notification");
    }
  };

and it works when i put the function in a Button

<Button title="Send push notification" onPress={sendNotification} />