[ZK Stack] - Failed to submit proof generation data for batch

[rafaeldvbn]

Team or Project

No response

Module Affected

• System contracts (era-system-contracts)
• Smart contracts (era-contracts)
• zkEVM (era-zk_evm)
• Server (zksync-era)
• Prover (era-boojum)
• Fee withdrawer (era-fee-withdrawer)
• Block Explorer (clock-explorer)
• Portal - Wallet + Bridge (dapp-portal)
• Other (please specify below)

Rust Version

1.84.1 locally, but not sure about the one on docker container

Operating System

• Ubuntu
• MacOS
• Windows
• Other (Please specify below)

Issue Description

Seeing this log on server:

2025-04-10T21:58:01.172296Z  INFO zksync_proof_data_handler::rpc_client: Sending proof for batch L1BatchNumber(4)

2025-04-10T21:58:01.284747Z ERROR zksync_proof_data_handler::rpc_client: Failed to submit proof generation data for batch RestartNeeded(Transport(MessageTooLarge)), unlocking: 4

looks like communication between server and prover gateway is failing for some reason, which is blocking the batch to be sent.

what should be done in this case?

Expected Behavior

To send the batch successfully to prover gateway

Current Behavior

Error happens, no batch sent

Repository Link (if applicable)

No response

Additional Details

server container image:
ghcr.io/matter-labs/server-v2:efc0007-1742901208202-linux-amd64

prover gateway container image:
ghcr.io/matter-labs/prover-fri-gateway:2.0-efc0007-1742901208202

Prior Research

• Yes, I searched for similar issues and did not find any matching ones.

[itegulov]

This is likely because you are using dev version of the image that had experimental proof data handler in it (subsequently reversed in matter-labs/zksync-era#3767). Do you have any reason to use a specific commit instead of one of the v27 releases? If not can you try latest v27.3.0 and see if that works for you?

[rafaeldvbn]

updating solved the issue. is v27 considered stable?

[itegulov]

27.2.0 is the latest stable version for external nodes (latest non-alpha version from here). AFAIK we don't have a very good notion of stable version for main nodes. Likely sticking to 27.2.0 would be your best shout though.