# Introduction
In https://github.com/twentyhq/twenty/pull/10751 we decided not to put
`APP_VERSION` references in `.env.example` as it's programmatically
defined by our CD and should not be override by any manual interaction.
Still, as a dev testing the upgrade command in local, if you do not set
the `APP_VERSION` in local you will encounter the following error:
```ts
'Cannot run upgrade command when APP_VERSION is not defined'
```
@guillim currently doing the release legitimately raised that it was not
very intuitive
## Levers
- Improve error message such as adding reference to checking env
variables
- App local upgrade command dev dedicated documentation ?
## Conclusion
Any suggestions are more than welcomed !
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