> ## Documentation Index
> Fetch the complete documentation index at: https://docs.robot-learning.co/llms.txt
> Use this file to discover all available pages before exploring further.

# 4. Troubleshooting

> Common failures and how to fix them.

<Accordion title="Exception: Unable to read from joint_1 (DM4340)">
  The code can't connect to the follower arm. Typically this is caused by wrong wiring. Check if you connected everything correctly. Also check if the E-Stop is open.
</Accordion>