# Problems with GX on S3

**URL:** <https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318>\
**Category:** GX Core Support\
**Created:** [August 7, 2023, 1:26pm UTC](https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318 "2023-08-07T13:26:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Fumobix](https://avatars.discourse-cdn.com/v4/letter/f/c67d28/32.png) [@Fumobix](https://discourse.greatexpectations.io/u/Fumobix)\
**Post date:** [August 7, 2023, 1:26pm UTC](https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318/1 "2023-08-07T13:26:03Z")

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Hello, im using GX 0.17.7 and im having a problem when doing a checkpoint.run:

After stating all my checkpoints and doing a SimpleCheckpoint, everything is saved fine in my S3 instance, but when running checkpoint.run() it seems as GX switches up the name of the previous result;

Its saved as  
20230807T122139.009641Z/default\_pandas\_datasource-#ephemeral\_pandas\_asset.json  
But its looking for  
20230807T122139/009641Z/default\_pandas\_datasource-#ephemeral\_pandas\_asset.json

So it somehow switches the dot (.) for a slash (/) so it gives me the following error:  
InvalidKeyError: Unable to retrieve object from TupleS3StoreBackend with the following Key: expectations/default/ **none** /20230807T122139/009641Z/default\_pandas\_datasource-#ephemeral\_pandas\_asset.json

How do i fix it?

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<div class="post-metadata">

**Author:** ![austin\_gx](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.greatexpectations.io/austin_gx/32/193_2.png) [@austin\_gx](https://discourse.greatexpectations.io/u/austin_gx)\
**Post date:** [August 8, 2023, 4:41pm UTC](https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318/2 "2023-08-08T16:41:09Z")

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Hey @Fumobix! Thanks for reaching out. What environment are you running GX from?

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<div class="post-metadata">

**Author:** ![Fumobix](https://avatars.discourse-cdn.com/v4/letter/f/c67d28/32.png) [@Fumobix](https://discourse.greatexpectations.io/u/Fumobix)\
**Post date:** [August 8, 2023, 5:44pm UTC](https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318/3 "2023-08-08T17:44:46Z")

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Hello! Im using python 3.9  
Thanks for your time

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<div class="post-metadata">

**Author:** ![nevintan](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.greatexpectations.io/nevintan/32/272_2.png) [@nevintan](https://discourse.greatexpectations.io/u/nevintan)\
**Post date:** [September 8, 2023, 3:54pm UTC](https://discourse.greatexpectations.io/t/problems-with-gx-on-s3/1318/4 "2023-09-08T15:54:44Z")

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Hi @Fumobix,

It looks like there may be a bug here. Can you please open a github issue with the following link and fill out the details so that we can investigate this further?

> **[Build software better, together](https://github.com/great-expectations/great_expectations/issues/new?assignees=&labels=&projects=&template=bug_report.md&title=)**
>
> GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 330 million projects.

Thanks.