Unable to parse grr-server-config file

[zecchino1]

When running import_nsrl_hashes.py to import the NSRL the following error is received:

Traceback (most recent call last):
File "import_nsrl_hashes.py", line 100, in
flags.StartMain(main)
File "/usr/share/grr-server/local/lib/python2.7/site-packages/grr/lib/flags.py", line 121, in StartMain
main([sys.argv[0]])
File "import_nsrl_hashes.py", line 83, in main
startup.Init()
File "/usr/share/grr-server/local/lib/python2.7/site-packages/grr/lib/startup.py", line 86, in Init
ConfigInit()
File "/usr/share/grr-server/local/lib/python2.7/site-packages/grr/lib/startup.py", line 37, in ConfigInit
config_lib.ParseConfigCommandLine()
File "/usr/share/grr-server/local/lib/python2.7/site-packages/grr/lib/config_lib.py", line 1662, in ParseConfigCommandLine
CONFIG.Initialize(filename=flags.FLAGS.config, must_exist=True)
File "/usr/share/grr-server/local/lib/python2.7/site-packages/grr/lib/config_lib.py", line 1178, in Initialize
raise ConfigFormatError("Unable to parse config file %s" % filename)
grr.lib.config_lib.ConfigFormatError: Unable to parse config file /etc/grr/grr-server.yaml