Unable to parse certificate

Traefik Traefik v3 (latest)
1

I deployed my instance via docker. I am getting this error message:

`2026-01-15T16:29:11Z ERR Unable to parse certificate /home//docker/traefik/certs/fullchain.pem error="unable to generate TLS certificate: tls: failed to find any PEM data in certificate input"
2026-01-15T16:29:11Z ERR Unable to parse certificate error="unable to generate TLS certificate: tls: failed to find any PEM data in certificate input"`

I’ve confirmed that the file exists, and owner, group and other have read permissions, and the pem file is in the right format.

2

Well, it seems the cert has not the right format. :wink: How did you create it, what do you see as content?

It should contain something like this and should have no password set:

-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----