shifting from npm to yarn incompatible module yarn issue

I was shifting my project from npm to yarn

first to remove npm

sudo rm -rf node_modules
sudo rm -rf package-lock.json

then run :

yarn

got through this issue

error hawk@0.10.2: The engine “node” is incompatible with this module. Expected version “0.8.x”. Got “10.21.0”
error Found incompatible module.

The solution for this is run this command:

yarn install --ignore-engines