Access Denied after enabling SSL

[plui]

I installed Zabbix 3.0.4 on Centos 7. I followed the instructions found here to enable SSL. I have added the following to /etc/httpd/conf/httpd.conf:

<VirtualHost *:443>
        SSLEngine on
        SSLCertificateFile /etc/pki/tls/certs/ca.crt
        SSLCertificateKeyFile /etc/pki/tls/private/ca.key
        <Directory /usr/share/zabbix>
        AllowOverride All
        </Directory>
        DocumentRoot /usr/share/zabbix
        ServerName csv-plui-centos7-zabbix.int.cirba.com
</VirtualHost>

It seems to work. I can go to the login page and login. After logging in as root, I can confirm I am the administrator:



But when I click to Administration -> General, I get the following screen:



It's like it forgot I'm the administrator. Any idea what could be wrong?