@orangepizza this seems to be the same problem, but, there is no solution provided. @rg305 this is a productive system on centos7. i have no way to move it. i switched to debian 11 and reinstalled all from scratch. now certbot is running as expected.
but the question remains: why does it happen ? how to solve it ? how to avoid such issues in future, in case of snap upgrade ? is snap a good solution for certbot ?