Deployment Error on rake assets:precompile

I deployed my rails 6 application but on 'cap production deploy', when the 'rake assets:precompile' is run, I receive the following error.
ModuleNotFoundError: Module not found: Error: Can't resolve 'css-loader' in '/home/deploy/moaash/releases/20200914125629'.
Can anyone help why is it occurring? The application seems to work perfectly locally in development environment.