Steps to reproduce:

1. Upgrade from 4.4 to 5.0 only change in environment
2. When Monitoring -> Hosts, then selected desired host 'Latest Data'
3. Current Hosts Loads, when 'reset' is pressed initially HTTP 500 Error

Result:
nginx log showed PHP memory exhaustion, documented in other versions. Increased to 256M from 128, error persists. Then pushed to 1G and eventually 'Reset' worked but has loaded all configured hosts (disabled and enabled).

Expected:
in 4.4 'reset' presents with blank screen for host/host group selection

Server Stats is attached