Web interface can fail to load on creation or before warmed up

[justparking]

The web interface can fail occasionally when a node is first created or a node has just been started due to the host starting up.

Typically there's an error in the browser console similar to this:

I believe there is race condition where at least one end-point is not returning valid data structure i.e. null instead of an empty list [] which is tripping up the rendering process on slower systems.