Hi team, 

When I code something and deploy to a sandbox, something it fails if I made a mistake or something doesn't work with the configuration of the sandbox.   When it fails, it used to give a details reason such as:
row 3 col 5 illegal assignment of String in Number field 

However, for some reason it stopped giving reasons but just the outcome
Now it just says DeployFailed: Deploy Failed

I am not sure if something change in CLI or I made a wrong setting. 
Can anyone please help?

Thanks!!