This might be the openssl bug that gets triggered by certificates from letsencrypt which in addition to an up-to-date CA cert also includes a more widely trusted, but by now expired CA cert (from my understanding of it anyway)
This might be the openssl bug that gets triggered by certificates from letsencrypt which in addition to an up-to-date CA cert also includes a more widely trusted, but by now expired CA cert (from my understanding of it anyway)