Traceback (most recent call last):
File "github-request-thingy.py", line 11, in <module>
HOOK_SECRET_KEY = os.environ[b'HOOK_SECRET_KEY']
File "/usr/lib/python3.4/os.py", line 628, in __getitem__
value = self._data[self.encodekey(key)]
File "/usr/lib/python3.4/os.py", line 704, in encode
raise TypeError("str expected, not %s" % type(value).__name__)
TypeError: str expected, not bytes