Error while creating certificate store error

Use 3 backticks before and after code/config (or select and press </> icon) to make it more readable and preserve spacing, which is important in yaml.

Do both of your files have the correct content?

certFile should look like like:

        -----BEGIN CERTIFICATE-----
        MIIDmDCCAx+gAwIBAgISBfsGbJvk20lIcmKqBC8+OMX6MAoGCCqGSM49BAMDMDIx
        ...
        -----END CERTIFICATE-----

        -----BEGIN CERTIFICATE-----
        MIIEVzCCAj+gAwIBAgIRAIOPbGPOsTmMYgZigxXJ/d4wDQYJKoZIhvcNAQELBQAw
        ...
        -----BEGIN CERTIFICATE-----

keyFile should look like:

        -----BEGIN PRIVATE KEY-----
        MHcCAQEEIEs+gNvQkO0EX/AyI6dI0Hplb4G8pfRMyDD47MntDgTDoAoGCCqGSM49
        ...
        -----END PRIVATE KEY-----