No need to write that further, provide more informations according to Cannot access the administration panel, this from 2.12.2021 when panel update automatically at version 1.5.1 - #4 by Raphael or just stop blaming hestia update without any proof. The thread before has also been proofed, that an used port was the issue - still waiting for the final information what service exactly caused the problem, but clearly an user error.