Isn't a directory

/usr/local/anaconda/bin/gafferd -c /home/folder/gaffer.ini gives:

```text
Traceback (most recent call last):
File "/usr/local/anaconda/lib/python3.6/site-packages/gaffer/gafferd/main.py", line 411, in run
s = Server(args)
File "/usr/local/anaconda/lib/python3.6/site-packages/gaffer/gafferd/main.py", line 105, in __init__
raise RuntimeError("%r isn't a directory" % self.config_dir)
RuntimeError: '/home/folder/gaffer.ini' isn't a directory

error: '/home/folder/gaffer.ini' isn't a directory
```
I see it searches for config directory (?), didn't dig much into the code.