Skip to content

[Error] Update error-520.mdx with additional note on PHP #25990

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: production
Choose a base branch
from
Open

[Error] Update error-520.mdx with additional note on PHP #25990

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions ...s/support/troubleshooting/http-status-codes/cloudflare-5xx-errors/error-520.mdx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ This error is often triggered by:
- Empty or malformed responses lacking an HTTP status code or response body.
- Missing response headers or origin web server not returning [proper HTTP error responses](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml).
- Incorrect HTTP/2 configuration at the origin server.
- Authentication Origin Pull enabled on Cloudflare but the origin is [not configured as expected](/ssl/origin-configuration/authenticated-origin-pull/set-up/zone-level/#2-configure-origin-to-accept-client-certificates).

:::note

Expand Down