[Ingest Management]: Error 'Unable to initialize Ingest Manager: Bad Request' is displayed on clicking 'Ingest Manager' link on 8.0.0-SNAPSHOT Kibana

Kibana version:
Kibana: 8.0.0-SNAPSHOT

Elasticsearch version:
Elasticsearch: 8.0.0-SNAPSHOT

Host OS and Browser version:
Windows 10 , All

Original install method (e.g. download page, yum, from source, etc.):
From 8.0.0-SNAPSHOT on staging cloud environment

Description
[Ingest Management]: Error 'Unable to initialize Ingest Manager: Bad Request' is displayed on clicking 'Ingest Manager' link on 8.0.0-SNAPSHOT Kibana

Preconditions

1. 8.0.0-SNAPSHOT Kibana cloud environment should be available.

Steps to Reproduce

1. Open the 8.0.0-SNAPSHOT Kibana cloud environment in browser.
2. Open the left hand menu and click 'Ingest Manager' link under Management.
3. Observe that error 'Unable to initialize Ingest Manager: Bad Request' is displayed.

Test data
N/A

Impacted Test case id
N/A

Actual Result
[Ingest Management]: Error 'Unable to initialize Ingest Manager: Bad Request' is displayed on clicking 'Ingest Manager' link on 8.0.0-SNAPSHOT Kibana.

Expected Result
[Ingest Management]: User should be successfully able to access Ingest Manager application on 8.0.0-SNAPSHOT Kibana.

What's working

• Issue is not occurring on 7.9.2-SNAPSHOT Kibana cloud environment.
• Issue is not occurring on refreshing the page.

What's not working

• N/A

Screenshot

Logs
Error: 'Failed to load resource: the server responded with a status of 500 ()' is displayed in browser console logs.

@karanbirsingh-qasource Please review the bug.

[elasticmachine]

Pinging @elastic/ingest-management (Team:Ingest Management)

Reviewed and assigned to @EricDavisX