SOLO-5016

UpgradeVersionFetchFailedSoloError

Description

Thrown when solo cannot fetch a requested upgrade version; the message names the version and wraps the underlying failure in cause. solo downloads upgrade artifacts for the chosen version, so this means the fetch did not complete — for example the version assets were unreachable or the download errored. It is retryable, since transient network issues often clear on a later attempt.

Troubleshooting Steps

1. Check internet connectivity
2. Verify the version exists: https://github.com/hashgraph/hedera-services/releases
3. Retry the upgrade: solo consensus network upgrade –upgrade-version