Live AsyncSession.send_tool_response fails with TypeError when FunctionResponse.parts carries inline bytes #3022

import asyncio

from google import genai
from google.genai import types


async def main():
    client = genai.Client()
    tool = types.Tool(function_declarations=[types.FunctionDeclaration(name='take_photo', description='Take a photo.')])
    config = types.LiveConnectConfig(response_modalities=['AUDIO'], tools=[tool])
    async with client.aio.live.connect(model='gemini-3.8-live', config=config) as session:
        await session.send_client_content(
            turns=types.Content(role='user', parts=[types.Part(text='Take a photo and describe it.')])
        )
        async for message in session.receive():
            if message.tool_call:
                call = message.tool_call.function_calls[0]
                await session.send_tool_response(
                    function_responses=types.FunctionResponse(
                        id=call.id,
                        name=call.name,
                        response={'output': 'Photo taken.'},
                        parts=[
                            types.FunctionResponsePart(
                                inline_data=types.FunctionResponseBlob(data=b'\x89PNG...', mime_type='image/png')
                            )
                        ],
                    )
                )
                break


asyncio.run(main())

import json

from google.genai import _common, _transformers as t, types

response = types.FunctionResponse(
    id='call_1',
    name='take_photo',
    response={'output': 'Photo taken.'},
    parts=[types.FunctionResponsePart(inline_data=types.FunctionResponseBlob(data=b'\x89PNG', mime_type='image/png'))],
)
json.dumps({'tool_response': _common.convert_to_dict(t.t_tool_response(response), convert_keys=True)})
# TypeError: Object of type bytes is not JSON serializable