Cannot GET /error.html&type=invalid_request

[khdelete819-sudo]

Why are you starting this discussion?

Question

What GitHub Actions topic or product is this about?

Misc

Discussion Details

CONTRIBUTING.md

[magnus-lower]

Hi! The error Cannot GET /error.html&type=invalid_request usually happens when the request URL or redirect path is invalid — for example, if an OAuth app, workflow, or documentation link isn’t set up correctly.

Try checking the URL or workflow file you’re using and make sure all required parameters are included. If this happens when opening a specific GitHub page, clearing your browser cache or trying in a private window might also help.

Could you share a bit more about when this error appears (e.g., during login, running an Action, or viewing a page)? That would help narrow it down further.

[cipher20000]

This error —

Cannot GET /error.html&type=invalid_request

usually indicates a redirect or authorization issue, where GitHub (or a third-party OAuth integration) can’t correctly resolve the requested URL or token parameters.

🔍 Common causes

Invalid or incomplete redirect URL in an OAuth or GitHub App configuration.

Expired or missing authorization token during GitHub Actions workflow execution.

Cached session or stale browser data when trying to access a documentation or login link.

✅ Fixes to try

If this happens during GitHub login or OAuth setup:

Go to https://github.com/settings/applications
→ remove any stale tokens or app connections.

Reauthorize the app or action again.

If it appears in a GitHub Actions workflow:

Double-check your workflow YAML file — ensure all required env variables and secrets (like GITHUB_TOKEN or client credentials) are set.

Confirm that redirect URLs in your OAuth app exactly match the callback URL expected by GitHub.

If it happens while viewing a GitHub page or doc link:

Clear browser cache or try incognito mode.

Revisit the original page and reauthenticate.

💡 Example:

This error often shows when a GitHub App or CI workflow tries to open a URL like:

https://github.com/login/oauth/authorize?...redirect_uri=

GitHub returns that /error.html&type=invalid_request page when parameters don’t match registered app settings.

If the problem persists, share where it happens (e.g., login, workflow run, or documentation link) — that helps narrow down whether it’s a workflow configuration, OAuth redirect, or UI bug.

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