TypeError: Cannot read property 'getMap' of undefined

[sentry-io[bot]]

Sentry Issue: FRONTEND-2ZZ

TypeError: Cannot read property 'getMap' of undefined
  at o.value (addon-tree-output/~ember-css-modules/ext.js:2:1)
  at o.t (addon-tree-output/~ember-css-modules/ext.js:2:1)
  at o.t.dispatchEvent (addon-tree-output/~ember-css-modules/ext.js:2:1)
  at o.t.notify (addon-tree-output/~ember-css-modules/ext.js:2:1)
  at o.t.set (addon-tree-output/~ember-css-modules/ext.js:2:1)
...
(27 additional frame(s) were not displayed)

[Turbo87]

most likely related to https://github.com/openlayers/ol-cesium/issues/679