Nuxt 2 Vue 2 RFC error: ::v-deep error keeps repeating

I'm using Nuxt 2 and I keep seeing MANY [@vue/compiler-sfc] ::v-deep usage as a combinator has been deprecated. Use :deep(<inner-selector>) instead. errors while running npm run dev.

I changed all occurrences of ::v-deep { .. } to ::v-deep(.class) { .. } and also I tried the shorthand :deep(.class) { .. } and still those errors are showing up in terminal for over a million time while on npm run dev.

I tried:

• Delete node_modules.
• Delete Package-lock.json.
• npm cache verify

But still same problem.

Does anyone knows a way that makes those errors go away? I don't want to downgrade my vue version, it's currently on ^2.6.12.