POST request stuck?

Question

Python

I just recently started learning docker and everything related to it. There is a ready-made project in python, there is a dev server for which there is a login / password and a token to make API requests. I deploy it locally in containers so that I can test the code before pushing, postgres and clickhouse databases.
Task: upload a post request to the postgres file.xlsx locally. I try to make a request in postman, passing the login and password to auth and passing the token in the parameters - the process just hangs, no errors, nothing ... I tried with a Python request - the same situation, tell me, what could be the problem?
Below docker-compose settings:

clickhouse:
    restart: always
    image: yandex/clickhouse-server:20.3.8.53
    ulimits:
      nofile:
        soft: 262144
        hard: 262144
    ports:
      - 9000:9000
    volumes:
      - clickhouse_volume:/var/lib/clickhouse

postgres:
    restart: always
    image: postgres:11.2-alpine
    shm_size: '512mb'
    environment:
      POSTGRES_DB: postgres
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
    ports:
      - 5432:5432
    volumes:
      - postgresdata:/var/lib/postgresql/data

.env

CLICKHOUSE_HOST=http://localhost:8123
CLICKHOUSE_OLD_HOST=localhost
CLICKHOUSE_DATABASE=default

forwarded ports for clickhouse