# Domain file error

**URL:** <https://forum.rasa.com/t/domain-file-error/59544>\
**Category:** Rasa Open Source\
**Created:** [September 2, 2023, 5:56am UTC](https://forum.rasa.com/t/domain-file-error/59544 "2023-09-02T05:56:09Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![Anubhavnatani04](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/anubhavnatani04/32/23386_2.png) [@Anubhavnatani04](https://forum.rasa.com/u/Anubhavnatani04)\
**Post date:** [September 2, 2023, 5:56am UTC](https://forum.rasa.com/t/domain-file-error/59544/1 "2023-09-02T05:56:09Z")

</div>

When I use mappings in slots the error is: ‘Encountered empty domain during validation.’

when I remove mappings in slots the error is: ‘Cannot find required key ‘mappings’. Path: ‘/slots/language’’

What do I do? Anyone please help ASAP

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_[View the full topic](https://forum.rasa.com/t/domain-file-error/59544)._