Your runtime does not expose the api.call.contractsApi.call runtime interfaces

[deuszx]

• I'm submitting a ...

• [x] Bug report
• [ ] Feature request
• [ ] Support request
• [ ] Other

• What is the current behavior and expected behavior?

After upgrading network to WeightsV2, my frontend code started to fail with the following errors

Uncaught (in promise) Error: Your runtime does not expose the api.call.contractsApi.call runtime interfaces
    at new Base (Base.js:13:1)
    at new Contract (Contract.js:33:1)
    at new ContractPromise (index.js:18:1)
    at getPostsAuthors (getPostsAuthors.ts:18:1)
    at async getAllPostsAuthors (BulletinBoard.tsx:51:1)

link to the repository.

• Please tell us about your environment:

1. Network running ink3, contracts deployed, custom frontend (built with polkadot.js) working.
2. Network migrated to ink4, contracts deployed, custom frontend (built with polkadot.js) not working.

3. ContractsUI connected to that same network capable of interacting with the contracts and the chain.

   • Version:

   • Environment:

   • [ ] Node.js

   • [ ] Browser

   • [ ] Other (limited support for other environments)

   • Language:

   • [ ] JavaScript

   • [x] TypeScript ("typescript": "^4.8.4")

   • [ ] Other

[jacogr]

It literally means what it says - the chain you are connecting to does not expose the runtime interfaces required. See the explict check -

https://github.com/polkadot-js/api/blob/114050f893344dc538f057642de84466bd76b129/packages/api-contract/src/base/Base.ts#L27-L29

It either means -

(a) it is a non-contract chain (e.g. Polkadot/Kusama/etc - a chain explicitly needs to have the contracts pallet included in the on-chain runtime) (b) it is an old version of the chain without the newer runtime interfaces (unlikely) (c) runtime misconfiguration if the pallet is indeed meant to be exposed

[deuszx]

Yes, I saw the Base.ts but I don't think that's the problem I'm having.

My setup:

1. The contracts and fronted (built with polkadotjs) were working correctly with ink3.
2. Network has been migrated to ink4.
3. Deployment and interactions with the contracts work through the ContractsUI.

Given that:

• on ink3 it used to work with my frontend (built with polkadotjs) and ContractsUI
• on ink4 it stopped working with my frontend and continues to work with ContractsUI

[deuszx]

I think I've found the reason why it keeps working with ContractsUI https://github.com/paritytech/substrate/pull/12358

[deuszx]

My chain is exposing that interface though @jacogr , see https://github.com/Cardinal-Cryptography/aleph-node/blob/main/bin/runtime/src/lib.rs#L924

[jacogr]

Yes, the RPCs are completely unused since they are deprecated/removed in Substrate. So the API only uses the state call interfaces directly.

[deuszx]

Tell me, please, if I get the exact same error when running substrate-contracts-node from https://github.com/paritytech/substrate-contracts-node/releases/tag/v0.22.1 and

"@polkadot/api": "^9.11.1",
"@polkadot/api-contract": "^9.11.1",

Wouldn't that mean it's not the problem with my chain but the library?

Error:

Uncaught (in promise) Error: Your runtime does not expose the api.call.contractsApi.call runtime interfaces
    at new Base (Base.js:13:1)
    at new Contract (Contract.js:33:1)
    at new ContractPromise (index.js:18:1)
    at getHighlightedPostsAuthors (getHighlightedPostsAuthors.ts:20:1)

[deuszx]

@jacogr , turns out that the error was caused by invalid version of npm -- failed on npm @ 9.1.1 but is "working" on 8.19.3.

[polkadot-js-bot]

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