Traceback (most recent call last):
  File "electrum\gui\qt\main_window.py", line 861, in timer_actions
  File "electrum\gui\qt\main_window.py", line 1015, in update_wallet
  File "electrum\gui\qt\main_window.py", line 1022, in update_tabs
  File "electrum\util.py", line 445, in <lambda>
  File "electrum\util.py", line 441, in do_profile
  File "electrum\gui\qt\history_list.py", line 275, in refresh
  File "electrum\util.py", line 445, in <lambda>
  File "electrum\util.py", line 441, in do_profile
  File "electrum\wallet.py", line 1160, in get_full_history
  File "electrum\wallet.py", line 1324, in get_tx_item_fiat
  File "electrum\wallet.py", line 2649, in price_at_timestamp
  File "electrum\exchange_rate.py", line 685, in timestamp_rate
  File "electrum\exchange_rate.py", line 666, in history_rate
  File "electrum\exchange_rate.py", line 158, in historical_rate
decimal.InvalidOperation: [<class 'decimal.ConversionSyntax'>]