EPERM: operation not permitted, copyfile

[afuno]

I'm trying to deploy two Rails applications to a server (5.1.7 and 6.0.3.4). But in the end I get the same error:

-----> Installing dependencies
       Installing node modules (yarn.lock)
       yarn install v1.22.10
       [1/4] Resolving packages...
       [2/4] Fetching packages...
       info fsevents@2.1.3: The platform "linux" is incompatible with this module.
       info "fsevents@2.1.3" is an optional dependency and failed compatibility check. Excluding it from installation.
       info fsevents@1.2.13: The platform "linux" is incompatible with this module.
       info "fsevents@1.2.13" is an optional dependency and failed compatibility check. Excluding it from installation.
       [3/4] Linking dependencies...
       warning "@rails/webpacker > postcss-cssnext@3.1.0" has unmet peer dependency "caniuse-lite@^1.0.30000697".
       warning " > vue-loader@13.7.3" has unmet peer dependency "css-loader@*".
       warning " > webpack-dev-server@2.11.5" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0".
       warning "webpack-dev-server > webpack-dev-middleware@1.12.2" has unmet peer dependency "webpack@^1.0.0 || ^2.0.0 || ^3.0.0".
       error An unexpected error occurred: "EPERM: operation not permitted, copyfile '/tmp/yarncache.VXiG0/v6/npm-abbrev-1.1.1-f8f2c887ad10bf67f634f005b6987fed3179aac8-integrity/node_modules/abbrev/README.md' -> '/tmp/build/node_modules/abbrev/README.md'".
       info If you think this is a bug, please open a bug report with the information provided in "/tmp/build/yarn-error.log".
       info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

More specifically:

error An unexpected error occurred: "EPERM: operation not permitted, copyfile '/tmp/yarncache.VXiG0/v6/npm-abbrev-1.1.1-f8f2c887ad10bf67f634f005b6987fed3179aac8-integrity/node_modules/abbrev/README.md' -> '/tmp/build/node_modules/abbrev/README.md'".

Does anyone know what the problem is and how to solve it?

[afuno]

These errors are random - that is, each deployment has a different package in the error text. But all errors about README.md, LICENSE.txt, .npmignore and other similar files.

error An unexpected error occurred: "EPERM: operation not permitted, copyfile '/tmp/yarncache.XZ2D8/v6/npm-@fortawesome-free-solid-svg-icons-5.15.1-e1432676ddd43108b41197fee9f86d910ad458ef-integrity/node_modules/@fortawesome/free-solid-svg-icons/LICENSE.txt' -> '/tmp/build/node_modules/@fortawesome/free-solid-svg-icons/LICENSE.txt'".

error An unexpected error occurred: "EPERM: operation not permitted, copyfile '/tmp/yarncache.Pzea8/v6/npm-babel-plugin-check-es2015-constants-6.22.0-35157b101426fd2ffd3da3f75c7d1e91835bbf8a-integrity/node_modules/babel-plugin-check-es2015-constants/.npmignore' -> '/tmp/build/node_modules/babel-plugin-check-es2015-constants/.npmignore'".