retreive_conf failed

/etc/freepbx.conf

<?php
$amp_conf['AMPDBUSER']  = 'asteriskuser';
$amp_conf['AMPDBPASS']  = 'XXXX';
$amp_conf['AMPDBHOST']  = 'localhost';
$amp_conf['AMPDBNAME']  = 'asterisk';
$amp_conf['AMPDBENGINE'] = 'mysql';
$amp_conf['datasource'] = ''; //for sqlite3

require_once('/var/www/freepbx/admin/bootstrap.php');

/etc/asterisk/manager.conf

;
; AMI - Asterisk Manager interface
;
; FreePBX needs this to be enabled. Note that if you enable it on a different IP, you need
; to assure that this can't be reached from un-authorized hosts with the ACL settings (permit/deny).
; Also, remember to configure non-default port or IP-addresses in amportal.conf.
; 
; The AMI connection is used both by the portal and the operator's panel in FreePBX.
;
; FreePBX assumes an AMI connection to localhost:5038 by default.
;
[general]
enabled = yes
port = 5038
bindaddr = 0.0.0.0
displayconnects=no ;only effects 1.6+

[admin]
secret = XXXX
deny=0.0.0.0/0.0.0.0
permit=127.0.0.1/255.255.255.0
read = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate
write = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate

#include manager_additional.conf
#include manager_custom.conf