# Error getting while loading bitsream PYNQ 3.0.1

**URL:** <https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078>\
**Category:** Support\
**Created:** [May 29, 2024, 3:59am UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078 "2024-05-29T03:59:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![madhusankar](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@madhusankar](https://discuss.pynq.io/u/madhusankar)\
**Post date:** [May 29, 2024, 3:59am UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078/1 "2024-05-29T03:59:20Z")

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I am working on ZCU104 and trying validate PYNQ.But when am loading bitstream through jupyter notebook am getting error “KeyError: ‘PS\_SUBSYSTEM\_zynq\_ultra\_ps\_e\_0’”

PYNQ 3.0.1  
VIVADO 2022.2  
Petalinux 2022.2  
Host PC : Ubuntu 20.04

 ![Screenshot from 2024-05-28 19-27-58](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/c/c38c146facde2f150c03d6c88c9d16cf7920837f.png)

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**Author:** ![pradeep\_gautam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/pradeep_gautam/32/3233_2.png) [@pradeep\_gautam](https://discuss.pynq.io/u/pradeep_gautam)\
**Post date:** [May 29, 2024, 11:05am UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078/2 "2024-05-29T11:05:55Z")

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I am facing somewhat similar error. When I try to load bitstream using Overlay, the Pynq is not able to load hierarchy properly. The same design I was able to work without any issue in Pynq 2.7 (Vivado 2020.2). Now once I moved to Pynq 3.0.1 and Vivado 2022.2, I am facing this issue. Attaching relevant snapshot and log

 ![error-pynq](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/5/5e39927b9ebccb1764ab7cfa703e700f58479dc5.png)  
[pynq-error.txt](https://discuss.pynq.io/uploads/short-url/cUFvpVUDNAs91N3T7DM2FcMFiHW.txt) (6.4 KB)  
I am using :  
Vivado : 2022.2  
Pynq: 3.0.1  
Board: ZCU111 (RfSoC)

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<div class="post-metadata">

**Author:** ![madhusankar](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@madhusankar](https://discuss.pynq.io/u/madhusankar)\
**Post date:** [May 29, 2024, 12:20pm UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078/3 "2024-05-29T12:20:02Z")

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Update  
I just moved to PYNQ 2.7 and Vivado 2020.1 and Petalinux 2020.1  
Am gettng error like this

 ![Screenshot from 2024-05-29 17-49-40](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/2/224b8b335b82109b8b56ac1515c0bdd85a5b3923.png)

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<div class="post-metadata">

**Author:** ![pradeep\_gautam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/pradeep_gautam/32/3233_2.png) [@pradeep\_gautam](https://discuss.pynq.io/u/pradeep_gautam)\
**Post date:** [June 1, 2024, 12:04pm UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078/4 "2024-06-01T12:04:50Z")

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I could resolve my error by trying this:  
python3 -m pip uninstall pynqmetadata  
python3 -m pip cache purge  
python3 -m pip install git+https://github.com/STFleming/PYNQ-Metadata.git@vivado\_target

I followed this post :

[CacheMetadataError - Support - PYNQ](https://discuss.pynq.io/t/cachemetadataerror/6367/10)

Now I am able to sucessfully load the overlay in Pynq with Pynq version 3.0.1 and Vivado version 2022.2.

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<div class="post-metadata">

**Author:** ![madhusankar](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@madhusankar](https://discuss.pynq.io/u/madhusankar)\
**Post date:** [June 3, 2024, 11:31am UTC](https://discuss.pynq.io/t/error-getting-while-loading-bitsream-pynq-3-0-1/7078/5 "2024-06-03T11:31:35Z")

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hi  
how you loaded bitstream in PYNQ2.7