> For the complete documentation index, see [llms.txt](https://xai-foundation.gitbook.io/xai-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xai-foundation.gitbook.io/xai-network/kn/about-xai/sentry-key-purchase-and-setup/common-troubleshooting-steps/why-do-i-get-an-error-for-challenge-2012.md).

# Why do I get an error for challenge 2012?

The following error message can be ignored for challenge 2012:

`Error submitting assertion for Sentry Key [X] to challenge 2012 - execution reverted`

This error occurs only for challenge 2012 because when the staking tiers were updated on 3/2/24, operators on the outdated version (1.1.3 and older) were still attempting to submit challenges which were invalid. 

A permanent fix for the error is underway. All rewards are working normally.