# Extension error?
**URL:** https://forum.makecode.com/t/extension-error/44860
**Category:** Help
**Tags:** extension
**Created:** [July 9, 2026, 11:27pm UTC](https://forum.makecode.com/t/extension-error/44860 "2026-07-09T23:27:49Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@4041532](https://forum.makecode.com/u/4041532)
#### Post date: [July 9, 2026, 11:27pm UTC](https://forum.makecode.com/t/extension-error/44860/1 "2026-07-09T23:27:49Z")
its not letting me swap to block code, and theres an error with an extension apparently, and i dont even know how to see the error what is happening
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### Author:  [@TheEarth](https://forum.makecode.com/u/TheEarth)
#### Post date: [July 10, 2026, 3:52pm UTC](https://forum.makecode.com/t/extension-error/44860/2 "2026-07-10T15:52:55Z")
I’m pretty sure you have to manually edit the extension not fix that
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### Author:  [@VoxelMaster64](https://forum.makecode.com/u/VoxelMaster64)
#### Post date: [July 10, 2026, 3:59pm UTC](https://forum.makecode.com/t/extension-error/44860/3 "2026-07-10T15:59:47Z")
Errors appear strangely, if you click the simulator and drag off, it should load
you should also send your project if possible
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### Author:  [@NeverStopTheCoder](https://forum.makecode.com/u/NeverStopTheCoder)
#### Post date: [July 11, 2026, 2:28am UTC](https://forum.makecode.com/t/extension-error/44860/4 "2026-07-11T02:28:03Z")
extensions should not need the tilemap file a extension you have might have a time map file it just needs to be removed from the JSON file on the extension