Why is my python 3 EAN query not working? - python-3.x

Question

today I tried to program a EAN query with an EAN database.
I tried to put the request into a json but every time I get an error.
If the query was succesful, you get the data in an MIME-Typ text/plain text format.
What can I do?
Here is my code:
import json
import requests
userid = "&queryid=400000000"
base_url = "http://opengtindb.org/?ean="
query = "&cmd=query"
while True:
print("Welcome to the EAN Database!")
print()
print("1: Search for API")
print("2: Exit")
choice = input("> ")
if choice == "2":
break
if choice == "1":
print("Enter the EAN Number")
print()
ean = input("> ")
ean_call = base_url + ean + query + userid
request = requests.get(ean_call)
print(request.raw)
print(request)
data = request.json()
print(data)
data = data['body']
print(ean)
print(data)
print(ean_call)
Here is the error:
Traceback (most recent call last):
File "/Users/leon/PycharmProjects/ean_api.py", line 28, in <module>
data = request.json()
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/requests/models.py", line 898, in json
return complexjson.loads(self.text, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/json/__init__.py", line 357, in loads
return _default_decoder.decode(s)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 2 column 1 (char 1)