WebSocket Connection Error

[mononym]

I tried to look into why queued documents are not processed. In the end, it was only a question of enough patience.
But I noticed an error in Settings > System Status (top right) > "WebSocket Connection"

{
    "pngx_version": "2.20.15",
    "server_os": "Linux-6.8.0-111-generic-x86_64-with-glibc2.39",
    "install_type": "bare-metal",
    "storage": {
        "total": 92342554660,
        "available": 43966247799
    },
    "database": {
        "type": "postgresql",
        "url": "dbd53e3dca2edd46f2b70b12cc2d9b0c26",
        "status": "OK",
        "error": null,
        "migration_status": {
            "latest_migration": "documents.1075_workflowaction_order",
            "unapplied_migrations": []
        }
    },
    "tasks": {
        "redis_url": "redis://redis-d53e3dca-2edd-46f2-b70b-12cc2d9b0c26:6379",
        "redis_status": "OK",
        "redis_error": null,
        "celery_status": "OK",
        "celery_url": "celery@d53e3dca-2edd-46f2-b70b-12cc2d9b0c26",
        "celery_error": null,
        "index_status": "OK",
        "index_last_modified": "2026-05-17T12:53:29.784656Z",
        "index_error": null,
        "classifier_status": "OK",
        "classifier_last_trained": "2026-05-17T12:05:02.705492Z",
        "classifier_error": null,
        "sanity_check_status": "OK",
        "sanity_check_last_run": "2026-05-17T00:30:02.789882Z",
        "sanity_check_error": null
    },
    "websocket_connected": "ERROR"
}

Don't know how critical that is...

[james]

Hello @mononym
Is there something 'unique' about your Cloudron set up?
Please post the output of cloudron-support --troubleshoot.

I just tried to reproduce this and the @paperless-ngx shows this status:

{
    "pngx_version": "2.20.15",
    "server_os": "Linux-6.8.0-106-generic-x86_64-with-glibc2.39",
    "install_type": "bare-metal",
    "storage": {
        "total": 105089261568,
        "available": 75854053376
    },
    "database": {
        "type": "postgresql",
        "url": "db03d44177398c497fbc6f4e8c08ee8092",
        "status": "OK",
        "error": null,
        "migration_status": {
            "latest_migration": "documents.1075_workflowaction_order",
            "unapplied_migrations": []
        }
    },
    "tasks": {
        "redis_url": "redis://redis-03d44177-398c-497f-bc6f-4e8c08ee8092:6379",
        "redis_status": "OK",
        "redis_error": null,
        "celery_status": "OK",
        "celery_url": "celery@03d44177-398c-497f-bc6f-4e8c08ee8092",
        "celery_error": null,
        "index_status": "OK",
        "index_last_modified": "2026-05-18T00:00:01.273615Z",
        "index_error": null,
        "classifier_status": "OK",
        "classifier_last_trained": "2026-05-18T08:05:01.763426Z",
        "classifier_error": null,
        "sanity_check_status": "OK",
        "sanity_check_last_run": "2026-05-17T00:30:01.353326Z",
        "sanity_check_error": null
    },
    "websocket_connected": "OK"
}

[joseph]

Maybe behind cloudflare?

[mononym]

@james said:

Is there something 'unique' about your Cloudron set up? Also no Cloudflare.

Not that I'm aware of. The check looks good.

Vendor: QEMU Product: Standard PC (i440FX + PIIX, 1996)
Linux: 6.8.0-111-generic
Ubuntu: noble 24.04
Cloudron: 9.1.7
Execution environment: kvm
Processor: Intel(R) Xeon(R) Gold 6126 CPU @ 2.60GHz
BIOS pc-i440fx-9.2  CPU @ 2.0GHz x 4
RAM: 12248260KB
Disk: /dev/sda2       232G
[OK]    node version is correct
[OK]    IPv6 is enabled in kernel. No public IPv6 address
[OK]    docker is running
[OK]    docker version is correct
[OK]    MySQL is running
[OK]    netplan is good
[OK]    DNS is resolving via systemd-resolved
[OK]    unbound is running
[OK]    nginx is running
[OK]    dashboard cert is valid
[OK]    dashboard is reachable via loopback
[OK]    No pending database migrations
[OK]    Service 'mysql' is running and healthy
[OK]    Service 'postgresql' is running and healthy
[OK]    Service 'mongodb' is running and healthy
[OK]    Service 'mail' is running and healthy
[OK]    Service 'graphite' is running and healthy
[OK]    Service 'sftp' is running and healthy
[OK]    box v9.1.7 is running
[OK]    Dashboard is reachable via domain name
[WARN]  Domain *******.com expiry check skipped because whois does not have this information