Could it be that you have (even accidentally) declared a core training story with the time entity?
There’s an example here. Note how the entities are declared with the intent in the example story.
If you don’t have any entities in your NLU training data, and you don’t have any in your core training stories, I don’t know what else to suggest. Your error message from core does suggest that this entity is being used somewhere.
sample ENTITY_NAME - {food, name,area, post, phone number}, ENTITY_VALUE -{european, Vapiano, centre, cb13tz, 02345 65819}
The domain file format has shown below,
slots:
entity_XX:
type: text
entities:
- entity_XX
When I use the EmbeddingPolicy, I get the problem that the “Feature ‘entity_XX’ could not be found in feature map.” I have also tried to alter the domain file as like as below and tried to train but still ended with the above problem
slots:
XX:
type: text
entities:
- entity_XX
I have trained successfully with the above mentioned story format and an appropriate domain file using keras policy.