Last.fm password parsing error

[mazzz1y]

When I'm trying to save my hard last.fm password in admin panel:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/maloja/apis/native_v1.py", line 89, in protector
    return func(*args,**kwargs)
  File "/usr/lib/python3.9/site-packages/maloja/apis/native_v1.py", line 615, in set_settings
    malojaconfig.update(keys)
  File "/usr/lib/python3.9/site-packages/doreah/configuration.py", line 57, in update
    else: self.usersettings[k] = self.types[k].sanitize(settings[k])
  File "/usr/lib/python3.9/site-packages/doreah/persistence.py", line 50, in __setitem__
    self._sync_to_disk()
  File "/usr/lib/python3.9/site-packages/doreah/persistence.py", line 40, in _sync_to_disk
    self.handler.write_file(tmpfile,data)
  File "/usr/lib/python3.9/site-packages/doreah/persistence.py", line 95, in write_file
    return self.write_descriptor(descriptor,data)
  File "/usr/lib/python3.9/site-packages/doreah/persistence.py", line 166, in write_descriptor
    cfg['MALOJA'] = data
  File "/usr/lib/python3.9/configparser.py", line 977, in __setitem__
    self.read_dict({key: value})
  File "/usr/lib/python3.9/configparser.py", line 754, in read_dict
    self.set(section, key, value)
  File "/usr/lib/python3.9/configparser.py", line 1204, in set
    super().set(section, option, value)
  File "/usr/lib/python3.9/configparser.py", line 894, in set
    value = self._interpolation.before_set(self, section, option,
  File "/usr/lib/python3.9/configparser.py", line 402, in before_set
    raise ValueError("invalid interpolation syntax in %r at "
ValueError: invalid interpolation syntax in '4u.%mD"%46ZLw{qchjJSM*;K@YVfV;z2o\\ac%9Z' at position 3