Page Zones bug?

HI! I just did a FreePBX 13 new install from image. All modules are updated except Zulu is disabled. When I login, there is in the Dashboard the warning that “A network interface that is assigned to the ‘Trusted’ zone has been detected. This is a misconfiguration. To ensure your system is protected from attacks, please change the default zone of interface ‘eth0’.”

When I click “resolve” in the warning, it will not open the Firewall page, but a garbled page, please check the screenshot here

Is there any way to solve this?