omegaconf.errors.ConfigAttributeError: Key 'io' is not in struct

[OmerTariq-KAIST]

Does someone encountered this error?
"
File "/home/omer/anaconda3/envs/niloc_test/lib/python3.8/site-packages/omegaconf/_utils.py", line 610, in _raise
raise ex # set end OC_CAUSE=1 for full backtrace
omegaconf.errors.ConfigAttributeError: Key 'io' is not in struct
full_key: io
reference_type=Optional[Dict[Union[str, Enum], Any]]
object_type=dict
"

[Sachini]

cannot help without more information. I can only ask to setup the paths as in 3 of instructions