CRITICAL_ERROR:
Line 94 /var/www/vhosts/hknepal.com/subdomains/my/httpdocs/class2.php

Error reported as: [2]: Unable to read core settings from database - non-existant core settings.
CRITICAL_ERROR:
Line 101 /var/www/vhosts/hknepal.com/subdomains/my/httpdocs/class2.php

Error reported as: [4]: No core backup found. Please run the Reset_Core utility to rebuild your core settings.
After rebuilding your core please save a backup from the admin/sql screen.