mod_roster_command: Fix subscription when the "user JID" is a bare domain. Do not attempt to update the roster when the user is bare domain (e.g. a component), since they don't have rosters and the attempt results in an error: $ prosodyctl mod_roster_command subscribe proxy.example.com contact@example.com xxxxxxxxxxFailed to execute command: Error: /usr/lib/prosody/core/rostermanager.lua:104: attempt to concatenate local 'username' (a nil value) stack traceback: /usr/lib/prosody/core/rostermanager.lua:104: in function 'load_roster' /usr/lib/prosody/core/rostermanager.lua:305: in function 'set_contact_pending_out' mod_roster_command.lua:44: in function 'subscribe'

---
labels:
- 'Stage-Alpha'
summary: API to notify server admins
---

# Introduction

This module provides an API for other module developers to send
notification messages to host admins.

# Configuration

None required.

# Developers

Example:

```
local notify_admins = module:depends("admin_notify").notify;

notify("This is an important message for you, admins")
```

# Compatibility

Prosody trunk or later. Incompatible with 0.11 or lower.