const loadUser = async () => {
   try {
       const response = await users.getUsersById();

       if (!response.ok) return console.log("Error");
       usersId = response.data
       var count = 0
       console.log(usersId)
       while (count != usersId.lenght - 1) {
           if (usersId[count].id == userId) {
               setUserFound(true)
               setUser(usersId[count].name)
               console.log(usersId[count].id)
           }
           count++
       }
   } catch (error) {
    console.log(error)
   }
};
    

And the error showing is as follows

undefined is not an object (evaluating 'usersId[count].id')