how can i convert GPS tracer to json file

Hi I'm trying to using the API to extract the GPS Tracer, and I would like to dump it into a JSON file I used the following code:

#overpass api url
url = 'https://api.openstreetmap.org/api/0.6/trackpoints?bbox=0,51.5,0.25,51.75&page=0'
response = requests.get(url)
response.json()

but unfortunately, this code gives me this error

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

is it possible to convert it to JSON format?