Cannot read property 'topic' of undefined

TypeError: Cannot read property 'topic' of undefined
    at _callee$ (/data/node_site/news.huoxing24.com/node/server/build/webpack:/assets/pages/FeatureDetails.js:33:42)
    at tryCatch (/data/node_site/news.huoxing24.com/node/node_modules/_regenerator-runtime@0.13.3@regenerator-runtime/runtime.js:45:40)
    at Generator.invoke [as _invoke] (/data/node_site/news.huoxing24.com/node/node_modules/_regenerator-runtime@0.13.3@regenerator-runtime/runtime.js:271:22)
    at Generator.prototype.(anonymous function) [as next] (/data/node_site/news.huoxing24.com/node/node_modules/_regenerator-runtime@0.13.3@regenerator-runtime/runtime.js:97:21)
    at asyncGeneratorStep (/data/node_site/news.huoxing24.com/node/node_modules/_@babel_runtime@7.7.6@@babel/runtime/helpers/asyncToGenerator.js:3:24)
    at _next (/data/node_site/news.huoxing24.com/node/node_modules/_@babel_runtime@7.7.6@@babel/runtime/helpers/asyncToGenerator.js:25:9)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:189:7)