Server Error (503) after the update

Cyberpanel 1.8 getting update 503 error after updating. My sites are opening, but I can’t access the panel.
I try ;
systemctl status gunicorn.socket
systemctl start gunicorn.socket

but to get into the panel, he gives an error again.

run:

mysql_install_db
service mysql restart
The error will disappear.

(Always than you restart your server, repeat it)

thi snot works for me in centos.
mysql_install_db give me LOT errors…
nothing change after that.

all fine now… i´ve re upgraded it and works perfect