Redirect breaks LetsEncrypt issue/renew
If you use the Redirect feature with setting "permanent" and a path configured, the pre-defined acme-challenge directory redirects to /usr/local/... are no longer working correctly as the acme-challenge gets redirected to something like
and thus will display 404 or 403 and not renew or issue the certificate correctly. If the redirect feature in the WebUI ist configured, that should also change the preconfigured "/.well-known/acme-challenge" config block to "/<redirect_path/.well-known/acme-challenge"
happened on ISPConfig latest stable (3.1.6) running with nginx web server. Had a software installed in a sub-path element () and configured the redirect as type "permanent" with path "" so calls to https:/// will auto-rewritten to .../app/
Just spotted today, that LE cert was broken as it was never renewed correctly.