Change chat format with API

[Empyreal96]

I'm trying to default to the "Chat Mode" format, I'm able to send generate requests as shown in the API docs, but if I replicate with my own client application the JSON that is sent in Chat Mode sessions I get Body Err: b, yet if I use the exact same JSON with the "Try it out" function it sends correctly

Here is the error:
Body Err: b'{"n": 1, "max_context_length": 1600, "max_length": 120, "rep_pen": 1.1, "temperature": 0.7, "top_p": 0.92, "top_k": 100, "top_a": 0, "typical": 1, "tfs": 1, "rep_pen_range": 320, "rep_pen_slope": 0.7, "sampler_order": [6, 0, 1, 3, 4, 2, 5], "memory": "", "genkey": "KCPP6833", "min_p": 0, "presence_penalty": 0, "logit_bias": {}, "prompt": "[The following is an interesting chat message log between You and KoboldAI.]\n\nYou: Hi.\nKoboldAI: Hello.\nYou: What is KoboldAI?\nKoboldAI:", "quiet": true, "stop_sequence": ["You:", "\nYou ", "\nKoboldAI: "], "use_default_badwordsids": false}'

Any ideas whi it doesn't work in my application but it does with the "Try it out" function?