Error in getting analyzer code running

[AtinAngrish]

Tried using the code for analyzer as given in chapter 3 codes and got the following error. I am unable to understand whats wrong. ES version is 6.5. Any ideas on how to solve this will be appreciated. Thanks!

error:
root_cause:

• type: "illegal_argument_exception"
  reason: "Failed to parse request body"
  type: "illegal_argument_exception"
  reason: "Failed to parse request body"
  caused_by:
  type: "json_parse_exception"
  reason: "Unrecognized token 'Fire': was expecting ('true', 'false' or 'null')\n
  \ at [Source: org.elasticsearch.transport.netty4.ByteBufStreamInput@1d20d049;
  \ line: 1, column: 6]"
  status: 400

[freesinger]

Since the ES version in this repository is v2.0, which is too out-of-date to be compatible with the present version.
You could run codes below which seem to be OK with my v7.3 ES.

def analyze(text, field):
    response = requests.get(
        ESADR + '/tmdb/_analyze?format=yaml', 
        json={'text': text, 'field': field}
    )
    print(response.text)
    
# test
analyze("Fire with Fire", "title")