ContentType is invisible after installing GraphQl plugin

Questions and Answers Strapi Backend
1
System Information
  • Strapi Version: 3.6.8
  • Operating System: Docker
  • Database: Postgres 14
  • Node Version: 14.16.1
  • NPM Version:
  • Yarn Version: 1.22.17

In my strapi project that I run in Docker I added the Graphql plugin from the Admin page. Everthing is fine and good. But suddently one of my collection types is not shown anymore in the Admin page. But I can fetch it with Graphql api from my Nuxt frontend. Also it appears that when starting my project with docker-compose up, the project isn’t running with yarn develop anymore. Because when I go to the Content Type manager in the admin page, I get a pop up that I need the autoreload function. So I have basically two problems: 1. My collection is invisible, 2. I can’t edit my collection types because autoreload doesnt work.
This is the dockerfile I am using.

version: '3'
services:
  strapi:
    image: strapi/strapi
    env_file:
      - ./.env
    volumes:
      - ./app:/srv/app
    ports:
      - '1337:1337'
    depends_on:
      - postgres
      
  postgres:
    image: postgres
    env_file:
      - ./.env
    volumes:
      - ./data:/var/lib/postgresql/data
    ports:
    - '5432:5432'