Kibana version:

master

Elasticsearch version:

snaapshot

Server OS version:

OS X 10.15.3

Browser version:

Chrome 80.0.3987.132

Browser OS version:

OS X 10.15.3

Original install method (e.g. download page, yum, from source, etc.):

Built kibana from master, running es from snapshot

Describe the bug:

A swarm of esaggs error toasts.

Steps to reproduce:

1. Load the flights sample data
2. Load the attached dashboard
3. Slow down network to 3G
4. Click refresh twice
   You should see just a single error
   Remove any of the visualizations in this minimal dashboard \ replace them with others - and the error disappears :-O

Expected behavior:

no errors, visualizations loaded

Screenshots (if relevant):

Errors in browser console (if relevant):

no relevant errors

Provide logs and/or server output (if relevant):

no relevant errors

Any additional context: