I can't install my own plugin that i published - Error Code: IS-0009

General Issues & Bug Reporting (Fab)
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21

Hello from the future, this solution worked for me 17th of September 2026.
Had to downgrade Launcher version after trying everything possible.

Downgraded to version 18.0 and it worked instantly.

22

Now it’s MD-0009 error. Downgrade to 18.0 helps, but it automatically downloads updates, and it can’t be stopped.