# Description

Fixes #698

The sanity check compares the total actuator joints (total_act_joints)
with the difference between the number of joints minus the number of
fixed tendons (self.num_joints - self.num_fixed_tendons), but the
warning message displays a comparison between total_act_joints and
self.num_joints. This is misleading on complex robots that includes
fixed tendons such as Franka hand.

## Type of change

- Bug fix (non-breaking change which fixes an issue)