Modifying the ‘Minimum Severity’ under Web page->Configure->Legacy Notification->Edit(check advanced) causes an ‘Internal Error’.
Does this happen every time? That often has something to do with timeouts.
I verified that this in not a timeout problem. Any change to “Minimum Severity” causes the Internal Error page to load.
I was able to reproduce, but only when changing the setting to “Medium Low” or “Medium High”, which are severities not available in the 7.6 alarming system. I’ll file a bug ticket for this.