TypeError: Cannot read property 'sampleQuestions' of undefined
at /var/app/current/classes/olympiadQuestionsRoutes.js:156:31
at Layer.handle [as handle_request] (/var/app/current/node_modules/express/lib/router/layer.js:95:5)
at next (/var/app/current/node_modules/express/lib/router/route.js:149:13)
at Route.dispatch (/var/app/current/node_modules/express/lib/router/route.js:119:3)
at Layer.handle [as handle_request] (/var/app/current/node_modules/express/lib/router/layer.js:95:5)
at /var/app/current/node_modules/express/lib/router/index.js:284:15
at param (/var/app/current/node_modules/express/lib/router/index.js:365:14)
at param (/var/app/current/node_modules/express/lib/router/index.js:376:14)
at param (/var/app/current/node_modules/express/lib/router/index.js:376:14)
at param (/var/app/current/node_modules/express/lib/router/index.js:376:14)