ERROR

2020-04-30T15:08:04.398911+00:00 app[worker.1]: Traceback (most recent call last):
2020-04-30T15:08:04.398954+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.8/runpy.py", line 193, in _run_module_as_main
2020-04-30T15:08:04.401495+00:00 app[worker.1]:     return _run_code(code, main_globals, None,
2020-04-30T15:08:04.401531+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.8/runpy.py", line 86, in _run_code
2020-04-30T15:08:04.401824+00:00 app[worker.1]:     exec(code, run_globals)
2020-04-30T15:08:04.401856+00:00 app[worker.1]:   File "/app/stdborg.py", line 40, in <module>
2020-04-30T15:08:04.402106+00:00 app[worker.1]:     borg = Uniborg(
2020-04-30T15:08:04.402139+00:00 app[worker.1]:   File "/app/uniborg/uniborg.py", line 63, in __init__
2020-04-30T15:08:04.403477+00:00 app[worker.1]:     self.load_plugin_from_file(a_plugin_path)
2020-04-30T15:08:04.403508+00:00 app[worker.1]:   File "/app/uniborg/uniborg.py", line 111, in load_plugin_from_file
2020-04-30T15:08:04.403919+00:00 app[worker.1]:     spec.loader.exec_module(mod)
2020-04-30T15:08:04.403943+00:00 app[worker.1]:   File "<frozen importlib._bootstrap_external>", line 783, in exec_module
2020-04-30T15:08:04.404171+00:00 app[worker.1]:   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2020-04-30T15:08:04.407823+00:00 app[worker.1]:   File "stdplugins/lyrics.py", line 22, in <module>
2020-04-30T15:08:04.408125+00:00 app[worker.1]:     genius = lyricsgenius.Genius(GApi)
2020-04-30T15:08:04.408160+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.8/site-packages/lyricsgenius/api.py", line 152, in __init__
2020-04-30T15:08:04.408437+00:00 app[worker.1]:     super().__init__(client_access_token, response_format, timeout, sleep_time)
2020-04-30T15:08:04.408470+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.8/site-packages/lyricsgenius/api.py", line 44, in __init__
2020-04-30T15:08:04.408713+00:00 app[worker.1]:     self._session.headers['authorization'] = 'Bearer ' + self._ACCESS_TOKEN
2020-04-30T15:08:04.408836+00:00 app[worker.1]: TypeError: can only concatenate str (not "NoneType") to str