This is a headless PiZeroW running Raspbian 9 and a node-red flow. The dashboard UI is displaying and working correctly, it shows the status of Bluetooth LE "beacons" as present or absent, so I know the flow is running. But I noticed the node-red editor web page is blank. I've an essentially duplicate system out in the garage and its all working as expected.
I'm at a loss as to what to do. Perhaps ssh in and reboot? How can this happen? I've tried re-opening the editor at :1880 in a new tab and still nothing.
If I open in new tab the "image error icons" in what should be the leftmost pane I get:
Cannot GET /red/images/node-red.png Cannot GET /red/images/spin.svg
I've never seen anything like this before.