After installation step of yarn, keystone.js is having issues with doing postinstall. It might be related to the babel issue.
at Scope.getProgramParent (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:391266)
at Scope.crawl (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:389859)
at Scope.init (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:389648)
at NodePath.setScope (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:318551)
at NodePath.setContext (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:318706)
at NodePath.popContext (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:319657)
at TraversalContext.visitQueue (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:311327)
at TraversalContext.visitMultiple (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:310771)
at TraversalContext.visit (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:311441)
at traverseNode (/user-service/node_modules/next/dist/compiled/babel/bundle.js:1910:396041) {
code: 'BABEL_TRANSFORM_ERROR'