Asyncio.exceptions.CancelledError inconsistently triggers when using preparesignedtx

[PogoDigitalism]

Asyncio.exceptions.CancelledError inconsistently triggers when using preparesignedtx

Example of my code:

# example below on how self.pk is generated
self.pk = hex(secrets.randbits(256))[2:] 


# another class function object
c = cryptos.Bitcoin(testnet=False)

create_signed_tx = c.preparesignedtx(self.pk, 
 self.mainnetAddress,
 self.recipientAddress,
 self.bitcoinTotal-self.est_fee,
 fee=self.est_fee)

self.pk is a key existing out of 256 randomly generated binary digits that are converted into a hexadecimal string (with the 0x, cut off)
self.mainnetAddress is a mainnet bc1 address generated from self.pk.

What causes this CancelledError? Is this a library issue or is this an error on my end.
Does preparesignedtx require a private key in Wallet Import Format?

Full error log:

 Traceback (most recent call last):
   File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/coins_async/base.py", line 1028, in preparesignedtx
     return await self.preparesignedmultirecipienttx(privkey, frm, outs, change_addr=change_addr,
  File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/coins_async/base.py", line 1011, in preparesignedmultirecipienttx
     tx = await self.preparemultitx(frm, outs, fee=fee, change_addr=change_addr,
   File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/coins_async/base.py", line 982, in preparemultitx
     unspents = await self.unspent(frm)
   File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/coins_async/base.py", line 397, in unspent
     unspents = await self.client.unspent(value)
File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/electrumx_client/client.py", line 508, in unspent
return await self.send_request("blockchain.scripthash.listunspent", scripthash)
File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/electrumx_client/client.py", line 389, in send_request
await self._ensure_connected()
 File "/workspace/.heroku/python/lib/python3.9/site-packages/cryptos/electrumx_client/client.py", line 351, in _ensure_connected
done, pending = await asyncio.wait([is_connected_task, self._connection_task],
File "/workspace/.heroku/python/lib/python3.9/asyncio/tasks.py", line 413, in wait
return await _wait(fs, timeout, return_when, loop)
 File "/workspace/.heroku/python/lib/python3.9/asyncio/tasks.py", line 529, in _wait
await waiter
 asyncio.exceptions.CancelledError

Regards,
Pogo

[PogoDigitalism]

In addition, this code has worked before, it just sometimes throw a CancelledError without context

[primal100]

Sorry for delay in reply. It looks like it might be an issue connecting to the ElectrumX servers. Are you using the latest version? I may need to update the json file for Bitcoin ElectrumX servers.

[PogoDigitalism]

Hi thanks for your response, don't worry about the delay 😄 . I was using the latest version yes.