# Can't sign in as admin user (undefined method \`username' for nil:NilClass)

**URL:** <https://meta.discourse.org/t/cant-sign-in-as-admin-user-undefined-method-username-for-nil-nilclass/68169>\
**Category:** Product Support\
**Created:** [16 Agosto, 2017 17:55 UTC](https://meta.discourse.org/t/cant-sign-in-as-admin-user-undefined-method-username-for-nil-nilclass/68169 "2017-08-16T17:55:38Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![almone](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/almone/32/120777_2.png) [@almone](https://meta.discourse.org/u/almone)\
**Post date:** [17 Agosto, 2017 07:29 UTC](https://meta.discourse.org/t/cant-sign-in-as-admin-user-undefined-method-username-for-nil-nilclass/68169/5 "2017-08-17T07:29:07Z")

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By the way I tried to make clean [Docker based install](https://github.com/discourse/discourse/blob/master/docs/INSTALL.md) on DO – everything is working like a charm there.

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_[View the full topic](https://meta.discourse.org/t/cant-sign-in-as-admin-user-undefined-method-username-for-nil-nilclass/68169)._