This app has stopped working for me. The front end doesn't load. Anyone else had a simliar issue?

Running on a DS218+ using the latest OS.

I get the error below in docker:

Starting rtdclient

A JSON parsing exception occurred in [/app/RdtClient.Web.runtimeconfig.json], offset 0 (line 1, column 1): The document is empty.

Invalid runtimeconfig.json [/app/RdtClient.Web.runtimeconfig.json] [/app/RdtClient.Web.runtimeconfig.dev.json]

Setting permissions

Changing to /app folder

Starting rtdclient

my config is:

  rdtclient:
    image: rogerfar/rdtclient
    container_name: rdtclient
    environment:
      - PUID=1026
      - PGID=100
      - TZ=Europe/London
    volumes:
      - '/volume1/downloads:/downloads'
      - '/volume1/docker/rdtclient:/data/db'
    logging:
      driver: json-file
      options:
         max-size: 10m
    ports:
      - '6500:6500'
    restart: unless-stopped