With these dependencies

"dependencies": {
    "graphql-yoga": "^1.16.7",
    "prisma-client-lib": "^1.19.0"
  },
  "devDependencies": {
    "graphqlgen": "^0.2.12",
    "prisma": "^1.19.0",
    "ts-node": "^7.0.1",
    "typescript": "^3.1.3"

I get this error when starting my yoga server :

src/generated/prisma-client/index.ts(6,28): error TS2307: Cannot find module 'graphql-tools/dist/Interfaces'.

. Should I add graphql-tools manually?