Loading dictionary throws 404 not found for languages not present in core components dictionary

[shravanthprasad]

Expected Behaviour

Should not try to load dictionary if not present for the language

Actual Behaviour

404 Not Found - for call
https:///etc.clientlibs/core/fd/af-clientlibs/core-forms-components-runtime-all/resources/i18n/nl-nl.json
We have high amount of 404 not found highlighted in Production monitoring logs because of this issue.

Reproduce Scenario (including but not limited to)

We have a page authored with lang=nl-nl , The form on initialization is trying to load languages and throwing 404 not found for languages not present under /apps/core/fd/af-clientlibs/core-forms-components-runtime-all/resources/i18n

Steps to Reproduce

1)Author a page with lang=nl-nl
2)Add Form onto the page
3)Publish the page
4)View in publish

Platform and Version

AEM 6.5.22

AEM Version (mention the exact version in case of cloud SDK)

AEM Forms Version

1.1.66

Sample Code that illustrates the problem

aem-core-forms-components/ui.frontend/src/LanguageUtils.js

Line 45 in 84b2898

const _langData = await HTTPAPILayer.getJson(url);

Logs taken while reproducing problem

[rismehta]

@shravanthprasad Yes, this was expected as per initial design. Though this should not impact any functionality but I agree that this is a quality + monitoring hygiene issue that should be fixed.

[shravanthprasad]

@rismehta do we have anything in plan to address this issue? making it configurable in the component or any other workaround?

[rismehta]

@shravanthprasad Could you verify whether this PR — #1694
— resolves the issue? Please confirm. You can test it locally by building the changes on the 650 branch.

[EDIT] Custom locales can exist in the default product locale directory. For instance, you can refer to this test collateral where customers may add their own locales. Because of this, we cannot add an explicit check within the product code

Since formcontainerview.js is customizable, you can add a project-specific check on your side to prevent loading the locale, similar to what I did in the PR I shared.

[shravanthprasad]

@rismehta - Tried by cherry picking the commit on top of release tag and I can confirm that the fix is working. But as you said I will try out Option 2 to add a check in formcontainerview.js to fix the above issue and let you know if all good.