Erro: -420 Database Error

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '%20_poster%20+%20''' at line 18

Statement:
SELECT
url.relatedid,
url.name,
url.urlguest,
url.queryguest,
url.urlclients,
url.queryclients,
url.urlsubclients,
url.querysubclients,
url.urlfinalclients,
url.queryfinalclients,
url.roleid, menu.parentid, parentmenu.name as parentname, IFNULL(parenturl.name,'#') as parenturl, menu.name as displayname
FROM url
left join menu on menu.urlid=url.id
left join menu as parentmenu on parentmenu.id=menu.parentid
left join url as parenturl on parentmenu.urlid=parenturl.id

WHERE url.name='assets/common/js/'%20+%20_poster%20+%20''