# controller-invalid

> Talos next · Since 0.6

A `controller.gravity` is negative, a `controller.maxFallSpeed` is 0 or less, or a `controller.step` is not more than 0 and under 1.8 m (the standing height); any of them NaN or infinite.

| | |
|---|---|
| Severity | `error` |
| Source | `contract` |
| Offers a fix patch | no |

## Messages

The message opens with the code; `<…>` stands for a value.

- `controller.gravity is <…>; it must be a finite number of m/s² of 0 or more (it always pulls down)`
- `controller.maxFallSpeed is <…>; it must be a finite number of m/s more than 0`
- `controller.step is <…>; it must be a finite number of metres more than 0 and under <…>, the character's standing height`

## Components it can refuse

- `controller`

## Since / changed

See the version chips above and what changed.