'How to increase header size in Grails 4/tomcat (spring-boot)?

In Grails how can you increase the response header size?

We are using Grails 4. This is basically Spring boot. It uses an embedded Tomcat.

Solution 1:^[1]

You can add this to application.yml with

server:
    max-http-header-size: 20000

Also check if you have any additional info in tokens, which is not needed.

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Solution	Source
Solution 1	Juliyanage Silva