# RASA X ERROR: Failed building wheel for ujson

**URL:** <https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711>\
**Category:** \[Deprecated\] Rasa X Community Edition\
**Created:** [August 10, 2021, 4:50am UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711 "2021-08-10T04:50:56Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![Smit](https://avatars.discourse-cdn.com/v4/letter/s/a183cd/32.png) [@Smit](https://forum.rasa.com/u/Smit)\
**Post date:** [August 10, 2021, 4:50am UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/1 "2021-08-10T04:50:56Z")

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@nik202 One of my friend is getting this error. He is doing the same steps as you told me yesterday. But he is getting this error after running this command **pip install rasa-x==0.39.3 --extra-index-url [Simple Index](https://pypi.rasa.com/simple)**. I’ve attached a screenshot. Please help us.

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/3X/4/3/431ce6b721208462d9902f09f66d237815697206.png)

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**Author:** ![nik202](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/nik202/32/16098_2.png) [@nik202](https://forum.rasa.com/u/nik202)\
**Post date:** [August 10, 2021, 10:15am UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/2 "2021-08-10T10:15:18Z")

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@Smit Hi. Please install [Microsoft C++ Build Tools](https://visualstudio.microsoft.com/visual-cpp-build-tools/) and upgrade setuptools with

`pip install --upgrade setuptools` .

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**Author:** ![Smit](https://avatars.discourse-cdn.com/v4/letter/s/a183cd/32.png) [@Smit](https://forum.rasa.com/u/Smit)\
**Post date:** [August 10, 2021, 10:57am UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/3 "2021-08-10T10:57:39Z")

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@nik202 Once again you have done it 🤩. Thank you so much for helping us. We really appreciate your advice and knowledge. 👏 👏

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**Author:** ![nik202](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/nik202/32/16098_2.png) [@nik202](https://forum.rasa.com/u/nik202)\
**Post date:** [August 10, 2021, 11:01am UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/4 "2021-08-10T11:01:40Z")

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@Smit Happy to help you 🤝👍

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**Author:** ![MarcusPoon0303](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/marcuspoon0303/32/16734_2.png) [@MarcusPoon0303](https://forum.rasa.com/u/MarcusPoon0303)\
**Post date:** [August 26, 2021, 12:50pm UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/5 "2021-08-26T12:50:07Z")

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i tried install the build tools 2019 and also upgraded the setuptools with command. but still get the error msg.

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**Author:** ![MarcusPoon0303](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/marcuspoon0303/32/16734_2.png) [@MarcusPoon0303](https://forum.rasa.com/u/MarcusPoon0303)\
**Post date:** [August 26, 2021, 1:06pm UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/6 "2021-08-26T13:06:29Z")

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i solved the error via uninstall ujson in pip and conda. and then “conda install ujson==1.35” it works

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**Author:** ![nik202](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/nik202/32/16098_2.png) [@nik202](https://forum.rasa.com/u/nik202)\
**Post date:** [August 26, 2021, 4:05pm UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/7 "2021-08-26T16:05:11Z")

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@MarcusPoon0303 great! 🙂

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**Author:** ![shethsankalp](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/shethsankalp/32/19472_2.png) [@shethsankalp](https://forum.rasa.com/u/shethsankalp)\
**Post date:** [May 11, 2022, 9:00pm UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/8 "2022-05-11T21:00:46Z")

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Hi, Do you know how we can solve the same issue in linux environment?

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**Author:** ![nik202](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/nik202/32/16098_2.png) [@nik202](https://forum.rasa.com/u/nik202)\
**Post date:** [May 15, 2022, 12:59pm UTC](https://forum.rasa.com/t/rasa-x-error-failed-building-wheel-for-ujson/46711/9 "2022-05-15T12:59:09Z")

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@shethsankalp can you elaborate more? and do tag me please.