login flow_start method（ Expecting value: line 1 column 1 (char 0) ）

[jackxi666]

The flow_start method fails to obtain json, and the error json exception is organized. What do you think?

return update_token(client, 'flow_token', 'https://api.x.com/1.1/onboarding/task.json',
params={'flow_name': 'login'},
json={
"input_flow_data": {
"flow_context": {
"debug_overrides": {},
"start_location": {"location": "splash_screen"}
}
}, "subtask_versions": {}
}) return status_code 403

[jackxi666]

@trevorhobenshield Can this problem be solved?