Failed to start heartbeat client: unknown error

[HealsCodes]

This is from the logs in SideStore 6.0.0 on iOS18.4.1 - it effectively renders SideStore completely unusable.

17:25:12 [INFO] minimuxer::muxer: Logger initialized!!
17:25:12 [INFO] minimuxer::muxer: minimuxer has started!
17:25:12 [INFO] minimuxer::muxer: Starting listener
17:25:12 [INFO] minimuxer::heartbeat: Starting heartbeat thread
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError
17:25:12 [ERROR] minimuxer::heartbeat: Failed to create heartbeat client: UnknownError

... forever, persists reboots and airplane mode ...