# Need some help with Actor died an error in its creation

**URL:** <https://discuss.ray.io/t/need-some-help-with-actor-died-an-error-in-its-creation/13760>\
**Category:** RLlib\
**Created:** [February 19, 2024, 2:57pm UTC](https://discuss.ray.io/t/need-some-help-with-actor-died-an-error-in-its-creation/13760 "2024-02-19T14:57:41Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Lars\_Simon\_Zehnder](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/lars_simon_zehnder/32/1185_2.png) [@Lars\_Simon\_Zehnder](https://discuss.ray.io/u/Lars_Simon_Zehnder)\
**Post date:** [February 26, 2024, 4:45pm UTC](https://discuss.ray.io/t/need-some-help-with-actor-died-an-error-in-its-creation/13760/5 "2024-02-26T16:45:09Z")

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RLlib cannot find a way to start your environment as you have not told it how to. You might need to register the environment first (with `tune.register_env`). You might also want to take a look into this thread: [Registering Custom Env That Passes an Argument in 1.13.0](https://discuss.ray.io/t/registering-custom-env-that-passes-an-argument-in-1-13-0/8783)

A reproducable example is needed to tell more about where the error might be.

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