See the status code yourself
curl -sS -o /dev/null -w '%{http_code}\n' https://example.com/pathAdd -v to see the full request and response headers.
HTTP 526 Invalid SSL Certificate (Cloudflare)
Cloudflare-specific: the origin certificate is invalid while SSL mode is Full (strict).
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- Code
526- Name
- Invalid SSL Certificate (Cloudflare)
- Category
- 5xx — Server error
How to fix / what to check
Install a valid certificate or a Cloudflare Origin CA certificate on the origin.