Errors running webpack-dev-server

gistfile1.txt

ERROR in /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphql-language-service-utils/dist/validateWithCustomRules.js
Module not found: Error: Can't resolve 'graphql/validation/rules/ExecutableDefinitions' in '/Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/node_modules/graphql-language-service-utils/dist'
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphql-language-service-utils/dist/validateWithCustomRules.js 20:18-75
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphql-language-service-utils/dist/index.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphql-language-service-interface/dist/getDefinition.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphql-language-service-interface/dist/index.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/codemirror-graphql/lint.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphiql/dist/components/QueryEditor.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphiql/dist/components/GraphiQL.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/~/graphiql/dist/index.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/app/javascript/graphql-explorer/components/GraphQLExplorer.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/app/javascript/graphql-explorer/index.js
 @ /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/app/javascript/packs/graphql-explorer.js
 @ multi (webpack)-dev-server/client?http://0.0.0.0:8080 /Users/mturley/.rvm/gems/ruby-2.4.2/bundler/gems/manageiq-graphql-5f68621f2791/app/javascript/packs/graphql-explorer.js
webpack: Failed to compile.