Dfx nns Extension Error dfx 0.24.3

Developers
1

I’m getting this at the end of my dfx nns install command with dfx 0.24.3.

Am I supposed to be uninstalling and reinstalling at regular interval.

2025-01-23 21:40:22.447495 UTC: [Canister rkp4c-7iaaa-aaaaa-aaaca-cai] [cycles] serialized state prior to upgrade (1605 bytes)
2025-01-23 21:40:22.447495 UTC: [Canister rkp4c-7iaaa-aaaaa-aaaca-cai] Panicked at 'Deserialization Failed: "Cannot parse header 286f7074207265636f7264207b206379636c65735f6c65646765725f63616e69737465725f6964203d206f7074207072696e636970616c2022756d3569772d72716161612d61616161712d71616162612d63616922207d29"', rs/rust_canisters/dfn_core/src/endpoint.rs:49:41
2025-01-23 21:40:24.364977 UTC: [Canister r7inp-6aaaa-aaaaa-aaabq-cai] [Root Canister] start_canister call successful. Ok(())
2025-01-23 21:40:24.364977 UTC: [Canister r7inp-6aaaa-aaaaa-aaabq-cai] [Root Canister] change_canister: Canister change failed: Attempt to call install_code with request ChangeCanisterRequest { stop_before_installing: true, mode: Upgrade, canister_id: CanisterId(rkp4c-7iaaa-aaaaa-aaaca-cai), wasm_module_sha256: "[de, 3d, 29, 97, b5, 6f, f8, b3, d, 80, 20, ac, 9e, 24, 37, bc, e3, a8, 99, 88, d6, bc, 5b, 69, 59, c5, f, 81, 29, 6b, 7b, 7e]", arg_sha256: "[5, c5, db, 83, 70, 35, 2c, 62, 2d, ef, f3, a2, 49, de, d6, e3, 55, 61, 2c, 3, 92, 8f, f6, 42, 18, 31, 87, ca, 80, 36, 4a, 13]", compute_allocation: None, memory_allocation: None } failed with code CanisterError: Error from Canister rkp4c-7iaaa-aaaaa-aaaca-cai: Canister called `ic0.trap` with message: Panicked at 'Deserialization Failed: "Cannot parse header 286f7074207265636f7264207b206379636c65735f6c65646765725f63616e69737465725f6964203d206f7074207072696e636970616c2022756d3569772d72716161612d61616161712d71616162612d63616922207d29"', rs/rust_canisters/dfn_core/src/endpoint.rs:49:41
Canister Backtrace:
unknown function at index 1399
unknown function at index 744
unknown function at index 1030
unknown function at index 1052
unknown function at index 1534
unknown function at index 1143
unknown function at index 1150
unknown function at index 1071
unknown function at index 89
1 Like
2

This is harmless and fixed by this commit of dfx extensions.

1 Like
3

Thanks! Just for clarity, will my extension auto download this chang in the future or do I need to update it somehow?

4

Once there’s a new release of the extensions, you’d need to upgrade your extension.