docker-compose.yml error

[cryptCEE]

on running docker compose am getting the following error. guess I am missing something, please help:

invalid mount config for type "volume": invalid mount path: 'niltalk-data' mount path must be absolute

thanks

[caspar000]

In docker-compose.yml on line 15 change

volumes:
  - niltalk-data

to

volumes:
  - niltalk-data:/data