`P2PNode` object has no attribute 'banscore'

[sinnx3]

OS: Ubuntu 18.04.6
P2Pool Branch: https://github.com/jtoomim/p2pool/tree/rawtx
BCHN Wallet Version: Bitcoin Cash Node Daemon version v28.0.1-631badbf6

Error:

Unhandled error in Deferred:

Traceback (most recent call last):
  File "/home/sinnx3/.local/lib/python2.7/site-packages/twisted/internet/base.py", line 1283, in run
    self.mainLoop()
  File "/home/sinnx3/.local/lib/python2.7/site-packages/twisted/internet/base.py", line 1292, in mainLoop
    self.runUntilCurrent()
  File "/home/sinnx3/.local/lib/python2.7/site-packages/twisted/internet/base.py", line 913, in runUntilCurrent
    call.func(*call.args, **call.kw)
  File "/home/sinnx3/.local/lib/python2.7/site-packages/twisted/internet/task.py", line 239, in __call__
    d = defer.maybeDeferred(self.f, *self.a, **self.kw)
--- <exception caught here> ---
  File "/home/sinnx3/.local/lib/python2.7/site-packages/twisted/internet/defer.py", line 151, in maybeDeferred
    result = f(*args, **kw)
  File "/home/sinnx3/p2pool-bch/p2pool/p2p.py", line 559, in forgive_transgressions
    self.banscore[host] -= 1
exceptions.AttributeError: 'P2PNode' object has no attribute 'banscore'