There was no airplane data retrieved with the folloiwng Python scripts. Could anyone help me please? Thansk in advance!

Returned string:
{‘states’: [], ‘time’: 1608711590}

Python scripts:
import http.client

conn = http.client.HTTPSConnection(“adsbexchange-com1.p.rapidapi.com”)

headers = {
‘x-rapidapi-key’: “”,
‘x-rapidapi-host’: “”
}

conn.request(“GET”, “/icao/78048f/”, headers=headers)

res = conn.getresponse()
data = res.read()

print(data.decode(“utf-8”))