Failed to deploy: Could not copy /public

Hi the travis deployment fails with the following log: please help

travis_fold:end:dpl.3
Already up to date!
HEAD detached at 22cebd1
nothing to commit, working tree clean
Dropped refs/stash@{0} (cb68bce317ed6005c0dbaf6ada7b1484730d2dd0)
Could not copy /home/travis/build/overfullstack/overfullstack.github.io/public.
failed to deploy

Please link to the build, otherwise there’s not enough information for diagnostics.

Adding this resolved my issue. Thanks

script:
  - yarn build