- Make sure your PEM file starts with a dash -

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            11:2a:0e:3c:6a:8c:85:ff:6e:6a:bc:db:95:51:70:ce:b4:30:78:c7
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: C = IE, L = Dublin, O = Cesanta, CN = Test Root
        Validity
            Not Before: May  9 21:51:44 2020 GMT
            Not After : May  9 21:51:44 2050 GMT
        Subject: C = IE, L = Dublin, O = Cesanta, CN = Test Root
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:2c:ab:d1:02:66:24:96:d7:12:3e:09:50:4f:f1:
                    50:ee:51:e8:55:03:5e:ba:b1:1d:98:b2:72:79:27:
                    a8:1b:31:0d:5d:50:21:ff:42:f2:da:74:17:5e:53:
                    b2:65:41:c1:fc:84:de:4a:11:b9:8c:f4:19:d9:c4:
                    ca:2b:ea:eb:2c
                ASN1 OID: prime256v1
                NIST CURVE: P-256
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:TRUE
            X509v3 Key Usage: 
                Digital Signature, Key Encipherment, Key Agreement, Certificate Sign, CRL Sign
    Signature Algorithm: ecdsa-with-SHA256
         30:46:02:21:00:9c:71:6c:00:8c:06:41:0c:91:2f:cd:41:d3:
         87:47:e9:df:3a:22:ad:25:7c:bf:0e:2b:39:dd:7a:0c:4e:68:
         1d:02:21:00:8f:c1:22:30:10:61:5d:51:10:ea:08:2d:02:63:
         67:67:32:b5:06:63:96:57:bb:78:47:0a:88:d9:19:2e:f3:be
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----