Bug: Error when try to get most common alert from channel

[jaschadub]

Steps to reproduce the behavior

1. Go to @ai direct messages
2. Ask to "in team <name> channel <alerting channel> what is the most common alert?"
3. See error "Sorry! An error occoured while accessing the LLM. See server logs for details."

In log error: status code: 400, message: '<team>.LookupMattermostUser' does not match '^[a-zA-Z0-9_-]{1,64}$' - 'messages.2.name'"}

Expected behavior

Reply of what the most common alert is

Version and Platform

• Version: v0.3.2 Mattermost Version: 7.1.4 Database Schema Version: 89 Database: postgres