# V20.11.0-rc3 doesn't start

**URL:** <https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836>\
**Category:** Dgraph\
**Created:** [December 9, 2020, 7:27am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836 "2020-12-09T07:27:29Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![ahctangU](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ahctangu/32/6040_2.png) [@ahctangU](https://discuss.dgraph.io/u/ahctangU)\
**Post date:** [December 9, 2020, 7:27am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836/1 "2020-12-09T07:27:29Z")

</div>

## Report a Dgraph Bug

v20.11.0-rc3 image crashes on startup. With the following stack trace:

```auto
[Sentry] 2020/12/09 07:16:54 Sending fatal event [40ce315983df47658dde34700e81dfeb] to o318308.ingest.sentry.io project: 1805390
2020/12/09 07:16:54 manifest has unsupported version: 7 (we support 8).
Please see https://github.com/dgraph-io/badger/blob/master/README.md#i-see-manifest-has-unsupported-version-x-we-support-y-error on how to fix this.
Error while creating badger KV posting store
github.com/dgraph-io/dgraph/x.Checkf
	/ext-go/1/src/github.com/dgraph-io/dgraph/x/error.go:51
github.com/dgraph-io/dgraph/worker.(*ServerState).initStorage
	/ext-go/1/src/github.com/dgraph-io/dgraph/worker/server_state.go:124
github.com/dgraph-io/dgraph/worker.InitServerState
	/ext-go/1/src/github.com/dgraph-io/dgraph/worker/server_state.go:54
github.com/dgraph-io/dgraph/dgraph/cmd/alpha.run
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/alpha/run.go:700
github.com/dgraph-io/dgraph/dgraph/cmd/alpha.init.2.func1
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/alpha/run.go:94
github.com/spf13/cobra.(*Command).execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:830
github.com/spf13/cobra.(*Command).ExecuteC
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:914
github.com/spf13/cobra.(*Command).Execute
	/go/pkg/mod/github.com/spf13/cobra@v0.0.5/command.go:864
github.com/dgraph-io/dgraph/dgraph/cmd.Execute
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/cmd/root.go:71
main.main
	/ext-go/1/src/github.com/dgraph-io/dgraph/dgraph/main.go:102
runtime.main
	/usr/local/go/src/runtime/proc.go:204
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1374

```

### What version of Dgraph are you using?

v20.11.0-rc3

### Have you tried reproducing the issue with the latest release?

master and latest are fine.

### What is the hardware spec (RAM, OS)?

gcp standard node

### Steps to reproduce the issue (command/config used to run Dgraph).

try and run an image using v20.11.0-rc3

### Expected behaviour and actual result.

Dgraph should start without crashing

---

<div class="post-metadata">

**Author:** ![pawan](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/pawan/32/1946_2.png) [@pawan](https://discuss.dgraph.io/u/pawan)\
**Post date:** [December 9, 2020, 7:53am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836/2 "2020-12-09T07:53:24Z")

</div>

Hey @ahctangU

Are you using the release with a data directory from an older version? Which version are you upgrading from?

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<div class="post-metadata">

**Author:** ![ibrahim](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ibrahim/32/6387_2.png) [@ibrahim](https://discuss.dgraph.io/u/ibrahim)\
**Post date:** [December 9, 2020, 7:58am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836/3 "2020-12-09T07:58:17Z")

</div>

@ahctangU dgraph v20.07 and v20.11 are incompatible. You’ll have to do a backup/restore or an export/import.

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<div class="post-metadata">

**Author:** ![ahctangU](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/ahctangu/32/6040_2.png) [@ahctangU](https://discuss.dgraph.io/u/ahctangU)\
**Post date:** [December 9, 2020, 8:25am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836/4 "2020-12-09T08:25:09Z")

</div>

I see. In that case, why does master work? Isn’t master newer than rc3?

---

<div class="post-metadata">

**Author:** ![jasl](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/jasl/32/5797_2.png) [@jasl](https://discuss.dgraph.io/u/jasl)\
**Post date:** [December 23, 2020, 10:58am UTC](https://discuss.dgraph.io/t/v20-11-0-rc3-doesnt-start/11836/5 "2020-12-23T10:58:48Z")

</div>

@ibrahim can you point me where in the docs is this stated? also, is Dgraph using semver? because an incompatible change like this worth a major version change

Also, the error the throw the logs are outdated, as it included a broken link `Please see https://github.com/dgraph-io/badger/blob/master/README.md#i-see-manifest-has-unsupported-version-x-we-support-y-error on how to fix this.`