i am trying to send a prompt a notification when my sensor hit the threshold. but instead of 1 prompt, i receive 2 of the same prompt.

const TempGraph = () => {

 const [data, setData] = useState([]); // sound , temp, humidity , light , motion .
 const [thresholddata,setThresholdData] = useState([]);
 var result = [];
//  var i = 0;
 //const thresholds = '35';
 function addZero(i) {
  if (i < 10) {i = "0" + i}
  return i;
}

  useEffect(() => {
    const interval = setInterval(() => asyncFetch(),5000) //5000ms = 5sec

    return () => clearInterval(interval) // clear the interval everytime
  }, []);
  /* fetch specific sensor type */ 
  const asyncFetch = async() => {
      await fetch('api')
      .then((response) => response.json())
      .then((json) => setData(json))
      .catch((error) => {
        console.log('fetch data failed', error);
      });
      
    //fetching threshold data
     await fetch('api')
     .then((response) => response.json())
     .then((json)=>setThresholdData(json))
     .catch((error) => {
       console.log('fetch threshold data failed',error);
     });
     
  };

  if(data.length != 0){
      /* Loop through threshold table to get the same type id */
      for(var x =0;x<thresholddata.length;x++){
        // console.log(thresholddata[i])
          if(thresholddata[x].typeid == data[data.length-1].typeid && thresholddata[x].sensorid == data[data.length-1].sensorid){
          result = thresholddata[x];
            console.log(result)
  
        }
      }
      /* notification when the data value is over the threshold */
      if(result.upperthreshold < data[data.length-1].value){
        openNotificationWithIcon('warning',data[data.length-1].location);
        
      }

  }
   /* graph here */
}

I used a for loop to loop through all the data and make sure the id of them are the same. and when the value of the sensors hits above the threshold it will go to the notification. but the result variable saved 2 same value.