kuzzle: Insert big document get [Error: Unable to connect to kuzzle server at 192.168.0.146:7512]

This is my dockerfile:

version: '3.7'

services:

  kuzzle:
    image: kuzzleio/kuzzle:2.3.2 #latest #2.1.0
    ports:
      - "7512:7512"
    cap_add:
      - SYS_PTRACE
    sysctls:
      - net.core.somaxconn=8192
    depends_on:
      - redis
      - elasticsearch
    environment:
      - kuzzle_services__storageEngine__client__node=http://elasticsearch:9200
      - kuzzle_services__internalCache__node__host=redis
      - kuzzle_services__memoryStorage__node__host=redis
      - kuzzle_server__protocols__mqtt__enabled=true
      - NODE_ENV=production
      - kuzzle_limits__documentsWriteCount=3000000000
      - kuzzle_server__maxRequestSize=300mb
      - kuzzle_protocols__http__maxFormFileSize=300mb

  redis:
    image: redis:5 #latest

  elasticsearch:
    image: kuzzleio/elasticsearch:7.4.0 #kuzzleio/elasticsearch:latest
    ulimits:
      nofile: 65536
    environment:
      - cluster.name=kuzzle
      - "ES_JAVA_OPTS=-Xms2048m -Xmx2048m"

When i try to do a big request with javascript sdk:

const response = await kuzzle.document.createOrReplace(
            'uploaded_diary',
            'diary',
            _id,
            Diary
          );

where Diary is about 20mb i get this error: [Error: Unable to connect to kuzzle server at 192.168.0.146:7512]

if Diary is smaller about 14mb it works fine.

is set kuzzle_server__maxRequestSize=300mb why the request is refused?

Expected Behavior

kuzzle insert the document into elastic search

Current Behavior

kuzzle send back the error [Error: Unable to connect to kuzzle server at 192.168.0.146:7512]

Thanks