INVALID_CLIENT: Invalid redirect URI (again...)

[jamess60]

Not sure if Spotify have changed something yet again, but I cannot for love nor money get my deployment stable since the changes and I've been down for over 3 months. Documentation doesn't seem to have been updated to reflect the changes either...

Anyone able to see where I'm going wrong?

Compose:

services:
    your_spotify_server:
        container_name: your_spotify_server
        image: yooooomi/your_spotify_server
        restart: unless-stopped
        links:
            - mongo_your_spotify_server
        depends_on:
            - mongo_your_spotify_server
        environment:
            API_ENDPOINT: http://10.0.5.69:8080
            CLIENT_ENDPOINT: http://10.0.5.69:3000
            SPOTIFY_PUBLIC: xyz123
            SPOTIFY_SECRET: xyz123
            TIMEZONE: Europe/London
            CORS: i-want-a-security-vulnerability-and-want-to-allow-all-origins
            MONGO_ENDPOINT: mongodb://mongo_your_spotify_server:27017/your_spotify
        ports:
            - "8080:8080"
    mongo_your_spotify_server:
        container_name: mongo_your_spotify_server
        image: mongo:6
        restart: unless-stopped
        volumes: 
            - /containers/v-cont-01/data/your_spotify_server/data:/data/db
    your_spotify_server_client:
        container_name: your_spotify_server_client
        image: yooooomi/your_spotify_client
        restart: unless-stopped
        environment: 
            API_ENDPOINT: http://10.0.5.69:8080
        ports:
            - "3000:3000"

Spotify URI:
I have tried every combination of (standalone or at the same time]
[http or https]://[127.0.0.1 or localhost or 10.0.5.69]:[80 or 8080 or 3000 or 443 or 4423]/oauth/spotify/callback (and /api/oauth... despite not using the LSIO image)