./craft schematic/export

When I try to export the settings I always get this error
```
Exporting plugins
Exporting sites
Exporting volumes
Exporting assetTransforms
Exporting emailSettings
Exporting fields
PHP Notice 'yii\base\ErrorException' with message 'A non well formed numeric value encountered'

in /Users/*/vendor/craftcms/cms/src/services/Categories.php:156
```