Scheduler is Failling in Cron run

Hi,

This scheduler works fine until the point that it tries to save a bean. Any help is much appreciated.

<?php

    /**
     * Giovanni de Almeida
     */


    array_push($job_strings, 'lftm_it_atualiza_net');

    function lftm_it_atualiza_net() {
       
        $sql = "SELECT T3.id, T5.lftm_net_c FROM pcp01_posconsprincipal T1 ";
          $sql .= "INNER JOIN pcp01_posconsprincipal_contacts_c T2 ON T1.id = T2.pcp01_posconsprincipal_contactspcp01_posconsprincipal_idb ";
          $sql .= "AND T2.deleted = 0 AND T1.deleted = 0 ";
          $sql .= "INNER JOIN contacts T3 ON T3.id = T2.pcp01_posconsprincipal_contactscontacts_ida AND T3.deleted = 0 ";
          $sql .= "INNER JOIN contacts_cstm T4 ON T3.id = T4.id_c ";
          $sql .= "INNER JOIN pcp01_posconsprincipal_cstm T5 ON T5.id_c = T1.id ";
          $sql .= "WHERE T1.deleted = 0 AND DATE(T4.dt_ult_net_c) < DATE(T1.date_entered) ";
          $sql .= "GROUP BY T3.id LIMIT 100";

        $result = $GLOBALS['db'] -> query($sql);

          $GLOBALS['log']->fatal("Iniciando atualização de Net e análise de perfil");
         
        while ($row = $GLOBALS['db'] -> fetchByAssoc($result)) {

            $contact_bean = BeanFactory::retrieveBean('Contacts', $row['id'], array('disable_row_level_security' => true));
            //$user_bean = BeanFactory::retrieveBean('Users', $contact_bean -> assigned_user_id, array('disable_row_level_security' => true));
               $GLOBALS['log']->fatal("Processando contato " . $contact_bean->name);
            if (isset($contact_bean) && isset($contact_bean -> name) && !empty($contact_bean -> name)) {
              
                if ($contact_bean -> lftm_net_c != $row['lftm_net_c']) {

                    if ($row['lftm_net_c'] < 1000)
                         {
                        $contact_bean -> lftm_status_cliente_c = 'Inativo';
                        if ($contact_bean -> lftm_segmentacao_cliente_c != 'Online') {
                            $contact_bean -> lftm_segmentacao_cliente_c = 'Online';
                            $contact_bean -> chk_email_net_c = 1;
                        }
                    }
                    elseif ($row['lftm_net_c'] >= 1000 && $row['lftm_net_c'] < 100000)
                         {
                        $contact_bean -> lftm_status_cliente_c = 'Ativo';
                        if ($contact_bean -> lftm_segmentacao_cliente_c != 'Online') {
                            $contact_bean -> lftm_segmentacao_cliente_c = 'Online';
                            $contact_bean -> chk_email_net_c = 1;
                        }
                    }
                    elseif ($row['lftm_net_c'] >= 100000 && $row['lftm_net_c'] < 300000)
                         {
                        $contact_bean -> lftm_status_cliente_c = 'Ativo';
                        if ($contact_bean -> lftm_segmentacao_cliente_c != 'Plus') {
                            $contact_bean -> lftm_segmentacao_cliente_c = 'Plus';
                            $contact_bean -> chk_email_net_c = 1;
                        }
                    }
                    elseif ($row['lftm_net_c'] >= 300000 && $row['lftm_net_c'] < 1000000)
                         {
                        $contact_bean -> lftm_status_cliente_c = 'Ativo';
                        if ($contact_bean -> lftm_segmentacao_cliente_c != 'Unique') {
                            $contact_bean -> lftm_segmentacao_cliente_c = 'Unique';
                            $contact_bean -> chk_email_net_c = 1;
                        }
                    }
                    elseif ($row['lftm_net_c'] >= 1000000)
                         {
                        $contact_bean -> lftm_status_cliente_c = 'Ativo';
                        if ($contact_bean -> lftm_segmentacao_cliente_c != 'Private') {
                            $contact_bean -> lftm_segmentacao_cliente_c = 'Private';
                            $contact_bean -> chk_email_net_c = 1;
                        }
                    }
                        
                    $contact_bean -> lftm_net_c = $row['lftm_net_c'];
                         $contact_bean -> dt_ult_net_c = date('Y-m-d');
                        
                         $GLOBALS['log']->fatal("Net atualizado");
$contact_bean -> save();
                        
                         $GLOBALS['log']->fatal("Contato atualizado");
                        
                }


            }

        }

        return true;

    }

this is the log:

Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Processando contato MARTA TISSIANI DE TONI 
Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Processando contato AGENOR DE CARVALHO FILHO
Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Processando contato RODRIGO DA SILVA
Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Processando contato MARIO JOSE ZAMPOLLO
Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Net atualizado
Wed Aug  8 20:48:01 2018 [1000][1][FATAL] Job 9b684b1c-9b4b-11e8-b0b4-02768d5022b5 (Atualiza Net e perfil) failed in CRON run

Best Regards,

Giovanni