# Development env. Login Issue: stuck on 'Unlocking Your Data' (CORS error) **URL:** \ **Category:** Help me!\ **Created:** [January 17, 2025, 9:46am UTC](https://community.forestadmin.com/t/development-env-login-issue-stuck-on-unlocking-your-data-cors-error/7759 "2025-01-17T09:46:27Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![PJB](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/pjb/32/7382_2.png) [@PJB](https://community.forestadmin.com/u/PJB)\ **Post date:** [January 17, 2025, 9:46am UTC](https://community.forestadmin.com/t/development-env-login-issue-stuck-on-unlocking-your-data-cors-error/7759/1 "2025-01-17T09:46:27Z")
## Feature(s) impacted Forest admin login ## Observed behavior When I start my local rails server and try to login on my Forest Admin development environment, I get stuck on the “Unlocking your data” screen. My local rails server also freezes. ## Failure Logs ![Screenshot 2025-01-17 at 16.41.10](https://europe1.discourse-cdn.com/flex013/uploads/forest/original/2X/5/5c69268a5369a64945c24bdfe6fa3969ca322af3.jpeg) ![Screenshot 2025-01-17 at 16.41.17](https://europe1.discourse-cdn.com/flex013/uploads/forest/original/2X/a/a53b657c728228508d1490ee45b9371eb4234d5e.png) ## Context - Project name: Explora Project - Environment name: Development - Agent technology: Ruby on Rails 6.0 - Agent (forest package) name & version: forest\_liana 8 - Database type: Postgres ---
**Author:** ![anon7284711](https://avatars.discourse-cdn.com/v4/letter/a/ac8455/32.png) [@anon7284711](https://community.forestadmin.com/u/anon7284711)\ **Post date:** [January 17, 2025, 10:06am UTC](https://community.forestadmin.com/t/development-env-login-issue-stuck-on-unlocking-your-data-cors-error/7759/2 "2025-01-17T10:06:18Z")
Hello @PJB, Have you made any recent changes to your agent that could cause CORS issues ? Could you share the content of the failed preflight request on `/authentication` that resulted in a CORS error.