SOLUTION:
mod file
xcrud.php
search
$db->query('INSERT INTO `logs` (record_id,action,table_name,data) VALUES ("' . $ins_id . '","INSERT","' . $this->table . '","' . $q_log . '")');
replace with
$db->query('INSERT INTO `logs` (record_id,action,updated_by,table_name,data) VALUES ("' . $ins_id . '","INSERT","' .$_SESSION['user_id'].'","' . $this->table . '","' . $q_log . '")');
search
$db->query('INSERT INTO `logs` (record_id,action,table_name,data,old_record) VALUES (' . $db->escape($primary) . ',"UPDATE","' . $this->table . '","' . $q_log . '","' . $row_log_json . '")');
replace with
$db->query('INSERT INTO `logs` (record_id,action,updated_by,table_name,data,old_record) VALUES (' . $db->escape($primary) . ',"UPDATE","' .$_SESSION['user_id'].'","' . $this->table . '","' . $q_log . '","' . $row_log_json . '")');
search
$db->query('INSERT INTO `logs` (record_id,action,table_name,data,old_record) VALUES (' . $db->escape($this->primary_val) . ',"DELETE","' . $this->table . '","' . $q_log . '","' . $row_log_json . '")');
replace with
$db->query('INSERT INTO `logs` (record_id,action,updated_by,table_name,data,old_record) VALUES (' . $db->escape($this->primary_val) . ',"DELETE","' .$_SESSION['user_id']. '","' . $this->table . '","' . $q_log . '","' . $row_log_json . '")');