Unhandled error: "builtins.IndexError: tuple index out of range"

[Ulawun]

Hello :-)

The ghcr.io/joinmarket-webui/jam-standalone container is running,
JoinMarket is running,
but doesn't mix continuously.
I'm a maker and charge no (absolute) fees.
JoinMarket mixed twice, which this is one month ago.
For one month now there's no further mixing :-(

I'm running bitcoin core and
the ghcr.io/joinmarket-webui/jam-standalone container on one computer.
Computer: Linux Mint 21.3 Virginia 64-bit
Bitcoin core: v27.1.0
Docker: 24.0.7, build: ubuntu...
ghcr.io/joinmarket-webui/jam-standalone: v0.3.0

Initially I transferred BTC to wallet A.
Then JoinMarket mixed twice to wallet B.
Then it stopped mixing till now (for one month).

I restarted the backend several times,
but that didn't change the symptoms.

Every view hours (a view times a day) I get the same
unhandled error: "builtins.IndexError: tuple index out of range".
A snippet of the logs looks like this:

...
2024-12-06 23:24:06,871 [INFO] Lost IRC connection to: darkirc6tqgpnwd3blln3yfv5ckl47eg7llfxkmtovrv7c7iwohhb6ad.onion . Should reconnect automatically soon.
2024-12-06 23:25:33,684 [INFO] Lost IRC connection to: darkirc6tqgpnwd3blln3yfv5ckl47eg7llfxkmtovrv7c7iwohhb6ad.onion . Should reconnect automatically soon.
Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python3.9/dist-packages/twisted/python/log.py", line 96, in callWithLogger
return callWithContext({"system": lp}, func, *args, **kw)
File "/usr/local/lib/python3.9/dist-packages/twisted/python/log.py", line 80, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "/usr/local/lib/python3.9/dist-packages/twisted/python/context.py", line 117, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/local/lib/python3.9/dist-packages/twisted/python/context.py", line 82, in callWithContext
return func(*args, **kw)
--- ---
File "/usr/local/lib/python3.9/dist-packages/twisted/internet/posixbase.py", line 482, in _doReadOrWrite
why = selectable.doRead()
File "/usr/local/lib/python3.9/dist-packages/twisted/internet/tcp.py", line 248, in doRead
return self._dataReceived(data)
File "/usr/local/lib/python3.9/dist-packages/twisted/internet/tcp.py", line 253, in _dataReceived
rval = self.protocol.dataReceived(data)
File "/usr/local/lib/python3.9/dist-packages/twisted/internet/endpoints.py", line 151, in dataReceived
return self._wrappedProtocol.dataReceived(data)
File "/usr/local/lib/python3.9/dist-packages/txtorcon/socks.py", line 529, in dataReceived
self._machine.feed_data(data)
File "/usr/local/lib/python3.9/dist-packages/txtorcon/socks.py", line 136, in feed_data
self.got_data()
File "/usr/local/lib/python3.9/dist-packages/automat/_methodical.py", line 284, in got_data
value = output(oself, *a, **k)
File "/usr/local/lib/python3.9/dist-packages/automat/_methodical.py", line 322, in call
return self.method(oself, *args, **kwargs)
File "/usr/local/lib/python3.9/dist-packages/txtorcon/socks.py", line 311, in _relay_data
self._sender.dataReceived(d)
File "/usr/local/lib/python3.9/dist-packages/twisted/protocols/tls.py", line 324, in dataReceived
self._checkHandshakeStatus()
File "/usr/local/lib/python3.9/dist-packages/twisted/protocols/tls.py", line 251, in _checkHandshakeStatus
self._tlsShutdownFinished(Failure())
File "/usr/local/lib/python3.9/dist-packages/twisted/protocols/tls.py", line 377, in _tlsShutdownFinished
if _representsEOF(reason.value):
File "/usr/local/lib/python3.9/dist-packages/twisted/protocols/tls.py", line 121, in _representsEOF
errorQueue = exceptionObject.args[0]
builtins.IndexError: tuple index out of range
...

Is there any solution ?
Thanks in advance :-)