# Error message could be more informative **URL:** \ **Category:** Dgraph\ **Tags:** dgraph, untagged\ **Created:** [January 14, 2020, 12:01am UTC](https://discuss.dgraph.io/t/error-message-could-be-more-informative/8469 "2020-01-14T00:01:55Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![diggy](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/diggy/32/3666_2.png) [@diggy](https://discuss.dgraph.io/u/diggy)\ **Post date:** [January 14, 2020, 12:01am UTC](https://discuss.dgraph.io/t/error-message-could-be-more-informative/8469/1 "2020-01-14T00:01:55Z")
**Moved from GitHub [dgraph/4562](https://github.com/dgraph-io/dgraph/issues/4562)** _Posted by_ [dapperAuteur](https://github.com/dapperAuteur): ### What version of Dgraph are you using? 1.1.1 ### Have you tried reproducing the issue with the latest release? yes ### What is the hardware spec (RAM, OS)? 8 GB os 10.15.2 ### Steps to reproduce the issue (command/config used to run Dgraph). ran mutation `{ "set": [{ "uid": < 0x3 > , "inhabits": { "uid": "0x2711" } }, { "uid": < 0x4 > , "inhabits": { "uid": "0x2711" } }] } ` ### Expected behaviour and actual result. tell me which line the error is on and what’s causing the error ---
**Author:** ![diggy](https://yyz1.discourse-cdn.com/flex007/user_avatar/discuss.dgraph.io/diggy/32/3666_2.png) [@diggy](https://discuss.dgraph.io/u/diggy)\ **Post date:** [January 14, 2020, 2:07am UTC](https://discuss.dgraph.io/t/error-message-could-be-more-informative/8469/2 "2020-01-14T02:07:31Z")
[MichelDiz](https://github.com/MichelDiz) _commented_ : You are using angular brackets in a JSON file. Change `< 0x3 >` and `< 0x4 >` to `"0x3", "0x4"` and you are good to go.