After upgrade to 7.9.0 Kibana shows : “405 Method Not Allowed”

[somera]

Kibana version:

7.9.0

Elasticsearch version:

7.9.0

Server OS version:

Ubuntu 20.04

Browser version:

Chrome actual version

Describe the bug:

After upgrade to 7.9.0 I get this error in Kibana. See screenshot and Json response.

Expected behavior:

In 7.8.0 and 7.8.1 it worked fine.

Screenshots (if relevant):

Errors in browser console (if relevant):

{
  "statusCode": 405,
  "error": "Method Not Allowed",
  "message": "invalid escape sequence `%{[' at index 0 of: %{[@metadata][beat]}-%{[@metadata][version]}-2020.08.23,%{[@metadata][beat]}-%{[@metadata][version]}-2020.08.24,filebeat-7.9.0-2020.08.20-000001,filebeat-7.9.0-2020.08.22-000002,filebeat-7.9.0-2020.08.24-000003,logback-2020.08.16,logback-2020.08.17,logback-2020.08.18,logback-2020.08.20,logback-2020.08.23, allowed: [GET, PUT, HEAD, DELETE]"
}

[tsullivan]

Hi, can you let us know the steps leading to this error? It looks like the Index Management app, but we should confirm.

Is there a proxy in front of the Kibana server?

[elasticmachine]

Pinging @elastic/es-ui (Team:Elasticsearch UI)

[cjcenizal]

@somera It would also be helpful if you could show us the payload that's being sent with that request (cut off at the bottom of your screenshot of the browser dev tools).

[somera]

Hi, can you let us know the steps leading to this error? It looks like the Index Management app, but we should confirm.

Is there a proxy in front of the Kibana server?

There is no proxy. The access is directly.

[somera]

@somera It would also be helpful if you could show us the payload that's being sent with that request (cut off at the bottom of your screenshot of the browser dev tools).

I posted this here https://discuss.elastic.co/t/after-upgrade-to-7-9-0-kibana-shows-405-method-not-allowed/246279 too. And there is a link to the HAR file.

[cjcenizal]

Thanks for your help @somera. I figured out the cause of the issue and opened #76584. Once it's merged, it will ship with 7.9.2.

[somera]

@cjcenizal have you release date for the 7.9.1 and 7.9.2 version?

[cjcenizal]

@somera We're shooting for releasing 7.9.2 around late September or early October, but we can't guarantee a specific date. We released 7.9.1 today: https://www.elastic.co/blog/elastic-stack-7-9-1-released