API GLPI Zabbis

Hello, I'm starting out in this area of GLPI and Zabbis and I'm trying to integrate my Zabbix with GLPI, I followed the manual

https://www.zabbix.com/br/integrations/glpi#glpi

However, when testing, the error appears and I can't solve it, can anyone help?

Sending failed: TypeError: cannot read property 'session_token' of null