# Database errors from Subspace CLI

**URL:** <https://forum.autonomys.xyz/t/database-errors-from-subspace-cli/1280>\
**Category:** Support\
**Tags:** gemini, nodes, error\
**Created:** [March 18, 2023, 2:28pm UTC](https://forum.autonomys.xyz/t/database-errors-from-subspace-cli/1280 "2023-03-18T14:28:41Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Ryan-Subspace](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.autonomys.xyz/ryan-subspace/32/500_2.png) [@Ryan-Subspace](https://forum.autonomys.xyz/u/Ryan-Subspace)\
**Post date:** [March 22, 2023, 12:23am UTC](https://forum.autonomys.xyz/t/database-errors-from-subspace-cli/1280/3 "2023-03-22T00:23:56Z")

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For the “slots: Unable to author block in slot. No best block header: Chain lookup failed: Failed to get header for hash” error

I found a similar error & solution from previous networks, seems to be an issue based off user permissions

> [@Unable to author block in slot. No best block header: Chain lookup failed: Failed to get header for hash](https://forum.autonomys.xyz/t/unable-to-author-block-in-slot-no-best-block-header-chain-lookup-failed-failed-to-get-header-for-hash/313):
>
> 2022-06-12 01:03:25 [PrimaryChain] Unable to author block in slot. No best block header: Chain lookup failed: Failed to get header for hash 0x0352…e1c9

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