Unable to verify the first certificate

[cmoulliard]

Issue

I generated for a gitea server (running as localhost) the cert and key files using this command

minica -ip-addresses 127.0.0.1 -ca-cert localhost.crt -ca-key localhost.key

I copied the files generated under the folder 127.0.0.1 within the folder where gitea is picking up such files

[server]
PROTOCOL = https
HTTP_PORT = 3333
CERT_FILE = pki/127.0.0.1/cert.pem
KEY_FILE = pki/127.0.0.1/key.pem

But when I I try to create a git repository, then backstage which is the client executing POST requests returns the following error

unable to verify the first certificate

Here is the certificate generated

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

This problem is similar as reported on this project too: FiloSottile/mkcert#563