Trapper Item result don't show in Web

[nmz]

I'm using third party template from zabbix.share.com and there contain a lot of trapper items. Already finished necessary setup for template and still don't get result in web. But I can see some result from log. You can check it out piece of log form zabbix_server

Sending [mysql[mysql_user,mysql_pwd,lld ]
]
 24307:20160223:050828.357 get value from agent result: '{
	"data":[
	{
		"{#MYSQL_NAME}":"Aborted_clients",
		"{#MYSQL_VALUE}":"19"
		"{#MYSQL_TYPE}":"numeric"
	}
	,
	{
		"{#MYSQL_NAME}":"Aborted_connects",
		"{#MYSQL_VALUE}":"0"
		"{#MYSQL_TYPE}":"numeric"
	}
	,
	{
		"{#MYSQL_NAME}":"version_compile_os",
		"{#MYSQL_VALUE}":"Linux"
		"{#MYSQL_TYPE}":"string"
	}
	,
	{
		"{#MYSQL_NAME}":"wait_timeout",
		"{#MYSQL_VALUE}":"28800"
		"{#MYSQL_TYPE}":"numeric"
	}
	]
}'

[nmz]

zabbix_get error result

When I try to run zabbix_get -s <IP> -p 10050 -k "mysql[server_id]" command i got those error :
DBI connect('database=zabbix;host=<IP>','server_id',.. .) failed: Access denied for user ''@'test-server' to database 'zabbix' at /opt/mysql_check.pl line 114.
Can't call method "prepare" on an undefined value at /opt/mysql_check.pl line 116.
Already gave necessary grants to zabbix user in mysql.