broken links on build

[Arhell]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

When checking yarn start locally, everything works, I checked the links.
yarn build throws errors

Provided that docusaurus.config.js has onBrokenLinks: 'throw'
If you remove this value, then everything is fine, but the condition that this value would be.

Reproducible demo

kubevela/kubevela.github.io#771

Steps to reproduce

update https://github.com/kubevela/kubevela.io/pull/771/files
https://github.com/kubevela/kubevela.io/runs/7039961689?check_suite_focus=true

Expected behavior

There should be no errors if the links are not broken

Actual behavior

https://github.com/kubevela/kubevela.io/runs/7039961689?check_suite_focus=true

Your environment

• Public source code: https://github.com/kubevela/kubevela.io
• Public site URL:https://kubevela.io/
• Docusaurus version used: 2.0.0-alpha.75
• Environment name and version (e.g. Chrome 89, Node.js 16.4): 102 16+ node
• Operating system and version (e.g. Ubuntu 20.04.2 LTS): Ubuntu

[Josh-Cena]

Hi! It's because in the latest version, we will not output slugs with duplicate last segment by default. See #5830. You can fix this by adding explicit slugs to those docs.