[generate:form] In form.php.twig line 118: Variable "input" does not exist.

[DicksB]

Error occurs after updating to Drupal Console 1.9.0. Reverting to 1.8.0 restores expected behavior.

Update Drupal Console to 1.9.0
Run "drupal --uri=https://your-domain.com generate:form"
Follow prompts; input doesn't seem to matter as far as I've been able to determine
After entering the route path, error appears

Downgrade to 1.8.0 and repeat, and form will be successfully generated as expected.

Drupal: 8.7.3
Console: 1.9.0 (fails); 1.8.0 (works)
Console launcher: 1.8.0 and 1.9.0 (both fail with Console 1.9.0, both work with Console 1.8.0).