Ethereum’s Holesky testnet experienced an error that will require another launch attempt, community members and developers said on Sept. 15.

Ethereum researcher Diederik Loerakker, aka protolambda, wrote that one developer entered certain data in the wrong part of the network’s genesis files. He said:

“Someone put 0x686f77206d7563682069732074686520666973683f (“how much is the fish?”) as extra-data in the EL Holesky genesis.json, and not in the CL genesis.ssz.”

This resulted in a misconfiguration that caused the testnet to fail to launch, according to Loerakker. He added that other fork parameters are “rumored to mismatch” but did not provide further details of those issues.

Loerakker added that Holesky did not experience issues related to network size, something that was considered …