Assistance Required: Backend-Frontend Connection Error - subnet_not_found

Developers Motoko
1

Hello Community,

I’m relatively new to DApp development and I’ve hit a roadblock. I’m trying to connect my frontend to the backend of my DApp, and I’ve run into an error that I can’t seem to figure out.

Issue Details:
When I attempt to connect my frontend to the backend, I receive the following error in my console:

Here’s the error output for reference:

ERROR
Server returned an error:
Code: 400 ()
Body: subnet_not_found

AgentHTTPResponseError<http://localhost:8080/index.js:322:9
_requestAndRetry<http://localhost:8080/index.js:711:15
... (additional error lines) ...

image
image1920×1080 231 KB

Thank you all in advance for your support and understanding.

2

Can you show the output of dfx start with debug output? That would be dfx start --clean -vv

3

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image1487×666 49.1 KB

when i enter dfx deploy then

Uncaught (in promise) Error: Invalid certificate: Invalid signature from replica 3emtc-qvxqg-2q7y6-n5jwy-if4ky-3mjz2-ucgaf-hdh3v-46opc-vz5vj-3qe signed query.
    AgentError http://127.0.0.1:4943/index.js:2438
    CertificateVerificationError http://127.0.0.1:4943/index.js:1909
    node_modules dfinity/agent/lib/esm/agent/http/index.js/HttpAgent/</<@http://127.0.0.1:4943/index.js:532
    node_modules dfinity/agent/lib/esm/agent/http/index.js/HttpAgent/<@http://127.0.0.1:4943/index.js:494
    query http://127.0.0.1:4943/index.js:789

its coming

4
5

how can i set this one {verifyQuerySignatures: false}

6

Like this: feat: node signature verification for queries by krpeacock · Pull Request #784 · dfinity/agent-js · GitHub

7

i got that sir,
my problem is where can i get that file to edit
or need to add directly in the js file

8

I am facing exactly the same issue. Would love to know in which file do I have to make the change as you suggested?

9

Experiencing the same problem:
ERROR
Server returned an error:
Code: 400 ()
Body: subnet_not_found

AgentHTTPResponseError: Server returned an error:
Code: 400 ()
Body: subnet_not_found

at HttpAgent._requestAndRetry (http://localhost:8080/index.js:711:15)
at async HttpAgent._requestAndRetry (http://localhost:8080/index.js:709:20)
at async HttpAgent._requestAndRetry (http://localhost:8080/index.js:709:20)
at async HttpAgent._requestAndRetry (http://localhost:8080/index.js:709:20)
at async makeQuery (http://localhost:8080/index.js:748:30)
at async Promise.all (index 0)
at async HttpAgent.query (http://localhost:8080/index.js:769:39)
at async caller (http://localhost:8080/index.js:199:28)
at async HTMLFormElement.<anonymous> (http://localhost:8080/index.js:21530:20)
1 Like
10

verifyQuerySignatures: false goes into the option object that you feed into HttpAgent()

11

I have tried it without success.

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image1436×689 89.8 KB

This occur in this context:

Screenshot 2023-11-22 181537
Screenshot 2023-11-22 1815371913×815 73.2 KB

12

:slightly_frowning_face: I’m at the end of my JS skills. @peterparker do you maybe know the next step to try?

13

bro try using dfx 0.15.2-beta.2

14

there is a sample repo I can checkout to try to reproduce the issue?

15

dfx upgrade gives version: 0.15.1 as the latest.

16

DFX_VERSION=0.15.2-beta.2 sh -ci "$(curl -fsSL https://internetcomputer.org/install.sh)"

try this bro

17

dfx start --clean
Running dfx start for version 0.15.2-beta.2
Using the default definition for the ‘local’ shared network because My_Directory/.config/dfx/networks.json does not exist.
My_Directory/.cache/dfinity/versions/0.15.2-beta.2/ic-https-outcalls-adapter: error while loading shared libraries: libssl.so.1.1: cannot open shared object file: No such file or directory

18

Change your auto generated package.json dependensies:

“dependencies”: {
“@dfinity/agent”: “^0.20.1”,
“@dfinity/candid”: “^0.20.1”,
“@dfinity/principal”: “^0.20.1”
}

To a lower versions as follows:
“dependencies”: {
“@dfinity/agent”: “^0.17.0”,
“@dfinity/candid”: “^0.17.0”,
“@dfinity/principal”: “^0.17.0”,
“react”: “^18.2.0”
}

Then rerun the npm i this should work

19

downgrading the dependencies is working fine

20

Can’t believe that I land on that same problem too…

Agent-js v0.19.3 + dfx 0.15.1

mr: Server returned an error:
Code: 400 ()
Body: subnet_not_found

at t._requestAndRetry (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1723:11)
at async t._requestAndRetry (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1722:55)
at async t._requestAndRetry (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1722:55)
at async t._requestAndRetry (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1722:55)
at async t.query (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1731:29)
at async a (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:1961:144)
at async Gi (http://localhost:5173/node_modules/.vite/deps/@junobuild_core.js?v=70ccfa5d:2706:31)
at async Promise.all (index 1)
at async sync (http://localhost:5173/src/lib/workers/worker.ts?type=module&worker_file:63:33)
at async execute (http://localhost:5173/src/lib/workers/worker.ts?type=module&worker_file:31:31)