Error 409

I'm getting error 409 all the time. Even with enabled debug log. I'm trying to send the VCF file content via a PUT http request. I need more detailed error in order to fix it. the compose file is: ```yaml services: radicale: image: tomsquest/docker-radicale container_name: radicale volumes: - /mnt/docker/radicale/data:/data environment: # Enables authentication backend, htpasswd uses username/password pairs RADICALE_AUTH_TYPE: "htpasswd" # Authentication realm name shown to clients during login RADICALE_AUTH_REALM: "Radicale" # Inline htpasswd users, format is username:password, multiple users comma-separated RADICALE_AUTH_USERS: "contacts:supersecretpassword" # Password hashing algorithm used for htpasswd entries, bcrypt is recommended RADICALE_AUTH_HTPASSWD_ENCRYPTION: "bcrypt" # Defines how address books and vCards are stored on disk RADICALE_STORAGE_TYPE: "multifilesystem" # Filesystem path where all collections and contact files are stored RADICALE_STORAGE_FOLDER: "/data/collections" # Maximum age in seconds for stored sync tokens, older tokens are cleaned up RADICALE_STORAGE_MAX_SYNC_TOKEN_AGE: "2592000" # Access control policy, owner_only restricts users to their own collections RADICALE_RIGHTS_TYPE: "owner_only" # Enables the built-in Radicale web interface, mainly for debugging and inspection RADICALE_WEB_TYPE: "internal" # Controls log verbosity, info is a good balance for production RADICALE_LOG_LEVEL: "debug" restart: unless-stopped```