How to fix session handler error in Horde

If you are getting horde session handler error, then please check if horde db is present on server or not. You can use following steps.

mysqlshow |grep horde
It should give you output like

mysqlshow |grep horde
| horde |

If the output is blank, then you need to create a db called horde.

You can do it with commnd.
mysqladmin create horde

Then run a script :

/scripts/fullhordereset

If horde db is already exist on server then go to mysql and on mysql prompt run commands.

mysql>use horde;
mysql>repair table horde_sessionhandler;
mysql>\q

Then on shell prompt run commands

touch /var/cpanel/usecpphp
/scripts/fullhordereset

It will fix the most of issue with horde.