docker-compose throws error after 1.13 update

[norbertpapp]

Hello,
if do you maintain this project, could you help me please? 😿
I'm using your docker image to create dev environment for WHMCS development and tweaks, until Docker 1.13 update, worked almost like charm (except license verification issues), but now it's completely broken, Docker cannot build the image.

My docker-compose.yml:

version: '2'

services:
  whmcs:
    build: .
    links:
      - mysql
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./public:/usr/share/nginx/html
    networks:
      fixip:
        ipv4_address: x.x.x.x
  mysql:
    image: mysql
    volumes:
      - ./dev/migrations:/docker-entrypoint-initdb.d
    environment:
      MYSQL_ROOT_PASSWORD: dev
      MYSQL_USER: dev
      MYSQL_PASSWORD: dev
      MYSQL_DATABASE: dev
    networks:
      fixip:
        ipv4_address: x.x.x.x
networks:
  fixip:
    driver: bridge
    ipam:
      driver: default
      config:
      - subnet: x.x.x.x/16
        ip_range: x.x.x.x/24
        gateway: x.x.x.x

The error:

Building whmcs
Traceback (most recent call last):
  File "<string>", line 3, in <module>
  File "compose/cli/main.py", line 64, in main
  File "compose/cli/main.py", line 116, in perform_command
  File "compose/cli/main.py", line 848, in up
  File "compose/project.py", line 389, in up
  File "compose/service.py", line 302, in ensure_image_exists
  File "compose/service.py", line 786, in build
  File "site-packages/docker/api/build.py", line 139, in build
  File "site-packages/docker/utils/utils.py", line 105, in tar
  File "tarfile.py", line 2046, in addfile
AttributeError: 'NoneType' object has no attribute 'tobuf'
docker-compose returned -1