Check the user permissions on 192.168.195.93 for zabbix.
With the vSphere Client,
1. Click on the esx host
2. Go to the Permission Tab.
3. use the right mouse button and select add permission
4. Click the Add.. button
5. enter zabbix in the user area
6. Press enter/ok button
7. Select a role with the correct permissions.
Good luck.