{
    "timestamp": "2026-09-04 09:30:23",
    "level": "INFO",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "enrollUsersFromEnglishClassroomExec started for course_id=213, mode=batch",
    "memory_usage": "30 MB",
    "peak_memory": "30 MB"
}
{
    "timestamp": "2026-09-04 09:30:23",
    "level": "INFO",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "Found 72 users to enroll",
    "memory_usage": "32 MB",
    "peak_memory": "32 MB"
}
{
    "timestamp": "2026-09-04 09:31:19",
    "level": "ERROR",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "enrollUsersFromEnglishClassroomExec fatal error: Undefined variable $batchInsertLogs | \/var\/www\/html\/lms_hocmai\/storage\/app\/temp_enroll_users_6a9a2d3f1c360.php:106",
    "memory_usage": "60.5 MB",
    "peak_memory": "60.5 MB"
}
{
    "timestamp": "2026-09-04 09:38:38",
    "level": "INFO",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "enrollUsersFromEnglishClassroomExec started for course_id=213, mode=batch",
    "memory_usage": "30 MB",
    "peak_memory": "30 MB"
}
{
    "timestamp": "2026-09-04 09:38:38",
    "level": "INFO",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "Found 72 users to enroll",
    "memory_usage": "32 MB",
    "peak_memory": "32 MB"
}
{
    "timestamp": "2026-09-04 09:39:38",
    "level": "INFO",
    "function": "enrollUsersFromEnglishClassroomExec",
    "course_id": 213,
    "message": "enrollUsersFromEnglishClassroomExec completed - TotalUsers=72, Enrolled=72, Skipped=0",
    "memory_usage": "68.5 MB",
    "peak_memory": "68.5 MB"
}