# SanicException: Sanic instance named 'rasa\_sdk.endpoint' uses an invalid format. Names must begin with a character and may only contain alphanumeric characters, \_, or -

**URL:** <https://forum.rasa.com/t/sanicexception-sanic-instance-named-rasa-sdk-endpoint-uses-an-invalid-format-names-must-begin-with-a-character-and-may-only-contain-alphanumeric-characters-or/54548>\
**Category:** Feedback on Rasa Open Source\
**Created:** [July 28, 2022, 7:30am UTC](https://forum.rasa.com/t/sanicexception-sanic-instance-named-rasa-sdk-endpoint-uses-an-invalid-format-names-must-begin-with-a-character-and-may-only-contain-alphanumeric-characters-or/54548 "2022-07-28T07:30:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![karan](https://avatars.discourse-cdn.com/v4/letter/k/58f4c7/32.png) [@karan](https://forum.rasa.com/u/karan)\
**Post date:** [July 28, 2022, 1:12pm UTC](https://forum.rasa.com/t/sanicexception-sanic-instance-named-rasa-sdk-endpoint-uses-an-invalid-format-names-must-begin-with-a-character-and-may-only-contain-alphanumeric-characters-or/54548/2 "2022-07-28T13:12:10Z")

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installed rasa 3.1.0 and rasa-sdk 3.1.1. Problem solved!

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_[View the full topic](https://forum.rasa.com/t/sanicexception-sanic-instance-named-rasa-sdk-endpoint-uses-an-invalid-format-names-must-begin-with-a-character-and-may-only-contain-alphanumeric-characters-or/54548)._