Can't discover new nodes in testnet

Each time Sakia tries to find new nodes, it crashes with this stack:

DEBUG:node:connect_peers:Received a peer : HnFcS
DEBUG:network:handle_new_node:New node found : 8Fi1V
Traceback (most recent call last):
  File "sakia/core/net/network.py", line 358, in handle_new_node
TypeError: from_peer() missing 1 required positional argument: 'session'
Abandon (core dumped)

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