Hi! That sounds similar to https://github.com/spesmilo/electrum/issues/8365

Which version of Electrum are you using? Please make sure you are using the latest.

If so, could you please provide debug logs for when the error occurs. In particular I would like the exception "traceback". That would probably greatly help in reproducing and fixing.

(Feel free to comment on the github issue too. In fact I would notice any replies faster there, and probably reply faster myself.)