this is what it shows when i try to train it with the checkpoint in rules:
YamlValidationException: Failed to validate ‘data/rules.yml’. Please make sure the file is correct and all mandatory parameters are specified. Here are the errors found during validation:
in data/rules.yml:43:
Key ‘checkpoint’ was not defined. Path: ‘/rules/5/steps/5’
Since checkpoints are not supported in rules.yml, guess there is no way around duplicating the whole checkpoint definition from stories.yml to everywhere you intend to use the said checkpoint within rules.yml.