The password should not be an empty string.
Traceback (most recent call last):
File "/opt/electrum/electrum/gui/qt/__init__.py", line 377, in start_new_window
wallet = self._start_wizard_to_select_or_create_wallet(path)
File "/opt/electrum/electrum/gui/qt/__init__.py", line 446, in _start_wizard_to_select_or_create_wallet
wallet = self.daemon.load_wallet(wallet_file, d['password'], upgrade=True)
File "/opt/electrum/electrum/daemon.py", line 461, in func_wrapper
return func(self, *args, **kwargs)
File "/opt/electrum/electrum/daemon.py", line 474, in load_wallet
wallet.unlock(password)
File "/opt/electrum/electrum/wallet.py", line 3418, in unlock
self.check_password(password)
File "/opt/electrum/electrum/wallet.py", line 3069, in check_password
raise InvalidPassword("password given but wallet has no password")
electrum.util.InvalidPassword: password given but wallet has no password
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