@vue/language-core is missing.

[logue]

When I try to install vue-tsc@^1.6.4, it stops at trying to read @vue/language-core.
I got a 404 error, so I searched for the package with npm and yarn, but I couldn't find it.
https://www.npmjs.com/search?q=%40vue%2Flanguage-core

Apparently there was a place trying to load a package that does not exist in package.json.

language-tools/packages/vue-tsc/package.json

Line 20 in b642e47

"@vue/language-core": "1.7.0",

[so1ve]

#2437
should be fine now