File "/usr/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 881, in timer_actions
    self.update_wallet()
  File "/usr/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 1004, in update_wallet
    self.update_tabs()
  File "/usr/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 1012, in update_tabs
    self.request_list.update()
  File "/usr/lib/python3.9/site-packages/electrum/gui/qt/request_list.py", line 146, in update
    amount_str = self.parent.format_amount(amount) if amount else ""
  File "/usr/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 892, in format_amount
    return self.config.format_amount(x, is_diff=is_diff, whitespaces=whitespaces)
  File "/usr/lib/python3.9/site-packages/electrum/simple_config.py", line 642, in format_amount
    return format_satoshis(
  File "/usr/lib/python3.9/site-packages/electrum/util.py", line 655, in format_satoshis
    x = Decimal(x).quantize(Decimal('1E-8'))
  File "/usr/lib/python3.9/_pydecimal.py", line 2573, in quantize
    return context._raise_error(InvalidOperation,
  File "/usr/lib/python3.9/_pydecimal.py", line 4044, in _raise_error
    raise error(explanation)