Console error seen while adding an action type while creating alerts.

[rashmivkulkarni]

Kibana version: 7.11.0 snapshot build

Elasticsearch version: 7.11.0 snapshot build.

Server OS version: mac OSX

Browser version: Chrome latest

Browser OS version: NA

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

Describe the bug:

When I tried to create an alert with "Log Threshold" - action type: " Index" am getting this console error

kbn-ui-shared-deps.js:321 Uncaught Error: couldn't load module ace/theme/github or it didn't call define
    at a (kbn-ui-shared-deps.js:321)
    at kbn-ui-shared-deps.js:321
    at Array.forEach (<anonymous>)
    at kbn-ui-shared-deps.js:321
    at r (kbn-ui-shared-deps.js:321)
    at kbn-ui-shared-deps.js:321
    at s (kbn-ui-shared-deps.js:321)
    at HTMLScriptElement.r.onload.r.onreadystatechange (kbn-ui-shared-deps.js:321)

Somehow the HTML page is not getting included in the source.
Please Note: This doesn't stop anything, and the feature works as expected. This has something got to do with the
ace-editor (I think?)

cc @pmuellr any inputs here?

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)

[elasticmachine]

Pinging @elastic/kibana-alerting-services (Team:Alerting Services)

[spalger]

Looks like this might be related to the changes @jloleysens made to monaco/ace recently

[jloleysens]

Yeah, I can take a look