# INVALID_MESSAGE

The server could not read a message from the listener, so this listener and the server do not match.

Code `VALIDATION`, HTTP 422. A retry of the same call fails the same way.

## Failed

The listener did not connect.

## You can

Run `tinovio update`, then start the listener again.

## Tell your human

No human step needed.

Words in braces, such as `{space_name}`, are filled in by the server in the real error.
The four-part format: https://agents.tinovio.com/docs/errors?via=agent.