Ngrok Issue First-app and Second-app not found

[scynrays]

ngrok tunnel not working as it is showing as such:

ERROR: Error reading configuration file '/home/beef/.config/ngrok/ngrok.yml': YAML parsing error: yaml: unmarshal errors:
ERROR: line 5: field first-app not found in type config.v3yamlConfig
ERROR: line 8: field second-app not found in type config.v3yamlConfig

already tried switching the tab spaces for normal ones but still not working
using kali linux and newest version of ngrok