Problem running safe_network examples

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Thanks @Roland, I have a working faucet…

EDIT: and a buggy, incomplete register_history example: :partying_face:

Syncing with SAFE in 2s...
synced!
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Values (root Nodes):
"[alice]: this is alice 3"
"[bob]: this is bob 3"
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Node(Err(FromUtf8Error { bytes: [78, 173, 217, 152, 30, 60], error: Utf8Error { valid_up_to: 1, error_len: Some(1) } })..) Entry("[alice]: this is alice 3")
Node(Err(FromUtf8Error { bytes: [240, 81, 18, 188, 206, 180], error: Utf8Error { valid_up_to: 0, error_len: Some(1) } })..) Entry("[bob]: this is bob 3")
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