# Fireblocks-json-rpc any request returns error "Invalid JSON RPC response"

**URL:** https://community.fireblocks.com/t/fireblocks-json-rpc-any-request-returns-error-invalid-json-rpc-response/1598
**Category:** Developer Discussion
**Tags:** getting-started
**Created:** [November 13, 2024, 7:51am UTC](https://community.fireblocks.com/t/fireblocks-json-rpc-any-request-returns-error-invalid-json-rpc-response/1598 "2024-11-13T07:51:01Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![ssergs82](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/ssergs82/32/474_2.png) [@ssergs82](https://community.fireblocks.com/u/ssergs82)
#### Post date: [November 13, 2024, 7:51am UTC](https://community.fireblocks.com/t/fireblocks-json-rpc-any-request-returns-error-invalid-json-rpc-response/1598/1 "2024-11-13T07:51:01Z")

</div>

Hi,  
I am trying to use fireblocks-json-rpc  
I was able to run it locally with the command:

![image](https://us1.discourse-cdn.com/flex015/uploads/fireblocks/original/1X/e866449c61ce64c982c49dbd1e7d50b8da65d313.png)

server starts and I am trying to send the request to it via Postman:

curl --location --request POST ‘[http://127.0.0.1:8545/442b46fa-7341-46bf-b47c-75612923df7e](http://127.0.0.1:8545/442b46fa-7341-46bf-b47c-75612923df7e)’   
–header ‘Content-Type: application/json’   
–data-raw ‘{  
“method”: “eth\_getBalance”,  
“params”: [  
“0x19400AC1f9df9102ADC1C0dF4d20d8c4B666B512”,  
“latest”  
],  
“id”: 1,  
“jsonrpc”: “2.0”  
}’

And I got the response (for any request):  
{  
“id”: 1,  
“jsonrpc”: “2.0”,  
“error”: {  
“message”: “Invalid JSON RPC response: {"size":0,"timeout":0}”,  
“code”: -32603  
}  
}

Could someone help me to figure it out? Thank you!