The error message:
error An unexpected error occurred: "https://registry.yarnpkg.com/handlebars/-/handlebars-4.0.11.tgz: ENOENT: no such file or directory, utime '/home/circleci/.cache/yarn/v1/npm-handlebars-4.0.11-630a35dfe0294bc281edae6ffc5d329fc7982dcc/dist/amd/handlebars/helpers/with.js'".
The message changes from build to build. Looks like Circle CI is missing some yarn packages ?
Everything passes fine on local.