There are multiple modules with names that only differ in casing.

[BonBonSlick]

WARNING in ./node_modules/moment/locale/en-SG.js
There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:
* /var/www/hint_ui/node_modules/moment/locale/en-SG.js
    Used by 2 module(s), i. e.
    /var/www/hint_ui/node_modules/moment/locale sync /^\.\/.*$/
* /var/www/hint_ui/node_modules/moment/locale/en-sg.js
    Used by 2 module(s), i. e.
    /var/www/hint_ui/node_modules/moment/locale sync /^\.\/.*$/
 @ ./node_modules/moment/locale/en-SG.js
 @ ./node_modules/moment/locale sync ^\.\/.*$
 @ ./node_modules/moment/moment.js
 @ ./node_modules/source-map-loader!./node_modules/vue-loader/lib??vue-loader-options!./src/components/admin/pages/episodes/episode_edit.vue?vue&type=script&lang=js&
 @ ./src/components/admin/pages/episodes/episode_edit.vue?vue&type=script&lang=js&
 @ ./src/components/admin/pages/episodes/episode_edit.vue
 @ ./src/router/admin.js
 @ ./src/router/index.js
 @ ./src/app.js
 @ multi ./src/app.js

for all applications after the upgrade.

"moment": "^2.22.2",

[marwahaha]

If you refresh your node_modules, do you still get this behavior?
This file was renamed
92a58a5#diff-540a63bb36c023e0365ce843d13413b1

[mauri870]

I have the same problem, tried removing my node_modules dir and install the deps again and it worked, ty!

[BonBonSlick]

Yes, remove folder node_modules and yarn/npm install resolves the issue, thanks!