# How to use custom model with IMPALA trainer (first time using rllib)

**URL:** <https://discuss.ray.io/t/how-to-use-custom-model-with-impala-trainer-first-time-using-rllib/3483>\
**Category:** RLlib\
**Created:** [September 8, 2021, 12:13pm UTC](https://discuss.ray.io/t/how-to-use-custom-model-with-impala-trainer-first-time-using-rllib/3483 "2021-09-08T12:13:03Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![mannyv](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/mannyv/32/606_2.png) [@mannyv](https://discuss.ray.io/u/mannyv)\
**Post date:** [September 8, 2021, 1:47pm UTC](https://discuss.ray.io/t/how-to-use-custom-model-with-impala-trainer-first-time-using-rllib/3483/3 "2021-09-08T13:47:47Z")

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Hi @thomasbbrunner,

Welcome to the forum. Do you have a stack trace with the error you are getting?

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_[View the full topic](https://discuss.ray.io/t/how-to-use-custom-model-with-impala-trainer-first-time-using-rllib/3483)._