Problems after update to release 12.6.0

Let's try:
# rm /opt/kaltura/app/base-config.lock /opt/kaltura/app/base-config-generator.lock

And then re-rerun
/opt/kaltura/bin/kaltura-config-all.sh

And look closely for errors.

Also, is your Sphinx daemon running?
# /etc/init.d/kaltura-sphinx status
And if it is, does:
# mysql -P9312 -h127.0.0.1
work?