Swimbot Error

Traceback (most recent call last):
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "c:\Users\swimm\OneDrive\Desktop\Swimbot\premium.py", line 63, in clanpromo
    num_clans = len(self.bot.clans.search(where('premium_member_id') == ctx.author.id))
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\tinydb\table.py", line 222, in search
    docs = [doc for doc in self if cond(doc)]
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\tinydb\table.py", line 222, in <listcomp>
    docs = [doc for doc in self if cond(doc)]
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\tinydb\table.py", line 524, in __iter__
    for doc_id, doc in self._read_table().items():
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\tinydb\table.py", line 574, in _read_table
    tables = self._storage.read()
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\site-packages\tinydb\storages.py", line 125, in read
    return json.load(self._handle)
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\swimm\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)