Portainer Errorcode 404/500 at nextcloud stack

services:
  nextcloud:
    image: linuxserver/nextcloud
    container_name: nextcloud
    environment:
      - PUID=1000 #change PUID if needed
      - PGID=100  #change PGID if needed
      - TZ=Europe/Berlin #change Time Zone if needed
    volumes:
      - /srv/dev-disk-by-id-dm-name-sda-crypt/appdata/nextcloud/config:/config #/srv/dev-disk-by-label-disk1 needs to be adjusted
      - /srv/dev-disk-by-id-dm-name-sda-crypt/appdata/nextcloud/data:/data     #/srv/dev-disk-by-label-disk1 needs to be adjusted
    depends_on:
      - mariadb
#    ports: # uncomment this and the next line if you want to bypass the proxy
#      - 450:443
    restart: unless-stopped
  mariadb:
    image: linuxserver/mariadb
    container_name: nextclouddb
    environment:
      - PUID=1000 #change PUID if needed
      - PGID=100  #change PGID if needed
      - MYSQL_ROOT_PASSWORD=MyPassword  #change password
      - TZ=Europe/Berlin #Change Time Zone if needed
    volumes:
      - /srv/dev-disk-by-id-dm-name-sda-crypt/appdata/nextclouddb:/config    #/srv/dev-disk-by-label-disk1 needs to be adjusted
    restart: unless-stopped
  letsencrypt:
    image: linuxserver/letsencrypt
#   image: linuxserver/swag                      #uncomment this line and comment the previous one if you want to use the new swag container (see link at bottom of the post)
    container_name: letsencrypt
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=1000 #change PUID if needed
      - PGID=100  #change PGID if needed
      - TZ=Europe/Berlin # change Time Zone if needed
      - URL=mydns.duckdns.org #insert your domain name - yourdomain.url
      - SUBDOMAINS=www,
      - VALIDATION=http
      - EMAIL=mymail@mailbox.org # define email; required to renew certificate
    volumes:
      - /srv/dev-disk-by-id-dm-name-sda-crypt/appdata/letsencrypt:/config  #/srv/dev-disk-by-label-disk1 needs to be adjusted
    ports:
      - 444:443
      - 81:80
    restart: unless-stopped

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2020/09/26 09:38:11 [DEBUG] [chisel, monitoring] [check_interval_seconds: 10.000000] [message: starting tunnel management process]
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2020/09/26 09:38:21 http error: Invalid JWT token (err=Invalid JWT token) (code=401)
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2020/09/26 09:38:21 http error: Unauthorized (err=Unauthorized) (code=401)
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2020/09/26 09:38:21 http error: No administrator account found inside the database (err=Object not found inside the database) (code=404)
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2020/09/26 09:38:21 http error: No administrator account found inside the database (err=Object not found inside the database) (code=404)
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2020/09/26 09:38:21 http error: No administrator account found inside the database (err=Object not found inside the database) (code=404)
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time="2020-09-26T09:45:02Z" level=error msg="Could not parse config for project mystack : Unsupported config option for services service: 'letsencrypt'\nUnsupported config option for services service: 'mariadb'\nUnsupported config option for services service: 'nextcloud'"
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2020/09/26 09:45:02 http error: Unsupported config option for services service: 'letsencrypt'
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Unsupported config option for services service: 'mariadb'
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Unsupported config option for services service: 'nextcloud' (err=Unsupported config option for services service: 'letsencrypt'
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Unsupported config option for services service: 'mariadb'
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Unsupported config option for services service: 'nextcloud') (code=500)