# Query stopped working

**URL:** <https://community.bitquery.io/t/query-stopped-working/1201>\
**Category:** GraphQL API\
**Tags:** support\
**Created:** [September 14, 2022, 12:52pm UTC](https://community.bitquery.io/t/query-stopped-working/1201 "2022-09-14T12:52:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![xudox](https://sea2.discourse-cdn.com/flex016/user_avatar/community.bitquery.io/xudox/32/651_2.png) [@xudox](https://community.bitquery.io/u/xudox)\
**Post date:** [September 14, 2022, 12:52pm UTC](https://community.bitquery.io/t/query-stopped-working/1201/1 "2022-09-14T12:52:15Z")

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My query used to work well but now returns an error.  
Query:

query QuickSwapSwapsQuery {  
ethereum(network: matic) {  
dexTrades(  
exchangeName: {in: “QuickSwap”}  
options: {asc: [“any”], limit: 25000}  
smartContractAddress: {is: “0x07D53B147EF96FAD1896D1156755A9DA7E06098E”}  
time: {after: “2022-04-30T20:00:00Z”}  
) {  
tradeAmount(in: USD)  
any(of: time)  
transaction {  
hash  
}  
}  
}  
}

Now it produces error:

[{ “message”: “undefined method `operation’ for nil:NilClass”, “locations”: [ { “line”: 3, “column”: 17 }], “path”: [“ethereum”, “dexTrades”], “error\_type”: “client” } ]

What might be the problem?

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<div class="post-metadata">

**Author:** ![bitquery-support](https://avatars.discourse-cdn.com/v4/letter/b/71c47a/32.png) [@bitquery-support](https://community.bitquery.io/u/bitquery-support)\
**Post date:** [September 14, 2022, 8:02pm UTC](https://community.bitquery.io/t/query-stopped-working/1201/2 "2022-09-14T20:02:40Z")

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Could you give us more details and how often this problem occurs?

I just tested the query and everything seems ok

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<div class="post-metadata">

**Author:** ![xudox](https://sea2.discourse-cdn.com/flex016/user_avatar/community.bitquery.io/xudox/32/651_2.png) [@xudox](https://community.bitquery.io/u/xudox)\
**Post date:** [September 15, 2022, 10:18pm UTC](https://community.bitquery.io/t/query-stopped-working/1201/3 "2022-09-15T22:18:16Z")

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NVM. Asked on your tg channel, guys said they’re on it. After 24h it works now, so all good.

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<div class="post-metadata">

**Author:** ![bitquery-support](https://avatars.discourse-cdn.com/v4/letter/b/71c47a/32.png) [@bitquery-support](https://community.bitquery.io/u/bitquery-support)\
**Post date:** [September 15, 2022, 11:57pm UTC](https://community.bitquery.io/t/query-stopped-working/1201/4 "2022-09-15T23:57:31Z")

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