requests.get 500 error code trying to access .cfm page

I am trying to scrape the following page:

https://apps.fcc.gov/oetcf/tcb/reports/Tcb731GrantForm.cfm?mode=COPY&RequestTimeout=500&tcb_code=&application_id=ll686%2BwlPnFzHQb6tru2vw%3D%3D&fcc_id=QDS-BRCM1095

headers_initial = {
        'user-agent': 'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Mobile Safari/537.36',
        'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
        'accept-language': 'en-US,en;q=0.9,de;q=0.8',
        'cache-control': 'max-age=0',
        'upgrade-insecure-requests': '1',
    }

r = requests.get(url, timeout=100, headers=headers_initial)
print(r.status_code)
print(r.headers)
print(r.text)

my status code is 400 my requests.get gets hung up. I would be very appreciative of any help someone can provide.