# Invalid memory address or nil pointer dereference error

**URL:** <https://discuss.dgraph.io/t/invalid-memory-address-or-nil-pointer-dereference-error/10424>\
**Category:** Dgraph\
**Tags:** status:accepted, ticket:created\
**Created:** [September 17, 2020, 8:32am UTC](https://discuss.dgraph.io/t/invalid-memory-address-or-nil-pointer-dereference-error/10424 "2020-09-17T08:32:46Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![BlankRain](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/blankrain/32/1592_2.png) [@BlankRain](https://discuss.dgraph.io/u/BlankRain)\
**Post date:** [September 23, 2020, 7:17am UTC](https://discuss.dgraph.io/t/invalid-memory-address-or-nil-pointer-dereference-error/10424/8 "2020-09-23T07:17:37Z")

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Hi  
The code based on the release of v20.07.0 .

> **[Release Dgraph v20.07.0 (Savvy Shuri) · dgraph-io/dgraph](https://github.com/dgraph-io/dgraph/releases/tag/v20.07.0)**
>
> Changed
> 
> GraphQL
> 
> Make updateGQLSchema always return the new schema. (#5540)
> Allow user to define and pass arguments to fields. (#5562)
> Move alias to end of graphql pipeline. (#5369)
> 
> 
> Return error...

I modified the code to fix some bugs .  
for example:  
[Bulk loader crashes during reduce phase - #26 by BlankRain](http://discuss.hypermode.com/t/bulk-loader-crashes-during-reduce-phase/9116/26)  
The git log ,I based is this one.

```auto
commit 7431be0dce0ffc42e3ff3e31b39fcdd5505e2bb3
Author: Martin Martinez Rivera <martinmr@dgraph.io>
Date: Mon Aug 3 11:54:25 2020 -0700

    add cluster lables to the jaeger containers (#5951) (#6009)

```

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