Solved for me just with
felixos8902013 Bit Poster
ERROR: Session_Exception: Unable to set up default locale: default locale does not exist or undefined. (Panel.php:65)
# mysql -uadmin -p`cat /etc/psa/.psa.shadow` -D psa -e "update misc set val='en-US' where param='def_locale';"
Thanks.
Me too
Same thing to me . I had to change my plesk server toward 10.4.
I don't still find the way they hack the panel plesk account.
Take care, i just delete all infected files (.pl .cgi, disable perl and cgi, it has bee hacked one more time after a week...