# Rasa nlu train never ends while using ConveRTTokenizer in the pipeline

**URL:** <https://forum.rasa.com/t/rasa-nlu-train-never-ends-while-using-converttokenizer-in-the-pipeline/28056>\
**Category:** Rasa Open Source\
**Created:** [April 26, 2020, 5:30am UTC](https://forum.rasa.com/t/rasa-nlu-train-never-ends-while-using-converttokenizer-in-the-pipeline/28056 "2020-04-26T05:30:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Khaled-Abdelhamid](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/khaled-abdelhamid/32/11586_2.png) [@Khaled-Abdelhamid](https://forum.rasa.com/u/Khaled-Abdelhamid)\
**Post date:** [April 26, 2020, 5:30am UTC](https://forum.rasa.com/t/rasa-nlu-train-never-ends-while-using-converttokenizer-in-the-pipeline/28056/1 "2020-04-26T05:30:51Z")

</div>

hey there, I have faced a problem while training rasa nlu. the model works fine if I removed ConveRTTokenizer and ConveRTFeaturizer , but when I add them it gives me the message in the terminal below without ever stopping. this is my config.yml

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/2X/a/a4b2819906720628ae44533602c8b51756c59292.png)this is the message that comes up ![image](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/2X/4/49a2dd43339fdc2427f5127cb8afed3bf8c32694.png)