Maps plugin not loading EMSClient of undefined

[liza-mae]

I am seeing these error logs on a map test, could be related to #42027, but not sure. Map is showing up blank in Chrome.

[00:01:38] │ERROR browser[SEVERE] http://localhost:5620/maps/sprite/maki.png - Failed to load resource: the server responded with a status of 404 (Not Found)
[00:01:38] │ERROR browser[SEVERE] http://localhost:5620/built_assets/dlls/vendors.bundle.dll.js 429:445665 e
[00:01:38] │ERROR browser[SEVERE] http://localhost:5620/maps/sprite/maki.json - Failed to load resource: the server responded with a status of 404 (Not Found)
[00:01:38] │ debg browser[WARNING] http://localhost:5620/built_assets/dlls/vendors.bundle.dll.js 429:433840 "Image "airport-15" could not be loaded. Please make sure you have added the image with map.addImage() or a "sprite" property in your style. You can provide missing images by listening for the "styleimagemissing" map event."

Version: master, 7.x

[elasticmachine]

Pinging @elastic/kibana-gis

[liza-mae]

Looks like it's caused by the plugin not loading:

proc [kibana] log [11:50:02.945] [error][status][plugin:maps@8.0.0] Status changed from yellow to red - Cannot read property 'EMSClient' of undefined

[thomasneirynck]

@liza-mae seems to be dupe of #41910 then

[liza-mae]

Thanks for quick fix for this @thomasneirynck! Just wanted to drop a comment that it was found by Nathan's test in Percy execution.

@nreese great job on this test, so far has been stable in percy and has spotted two real issues. Yay! :)