Should handle the case when CreateArticle request fails

[MrOrz]

View details in Rollbar: https://rollbar.com/mrorz/rumors-line-bot/items/153/

TypeError: Cannot read property 'id' of null
  File "/app/build/handlers/askingArticleSubmissionReason.js", line 46, in <unknown>
          const articleUrl = (0, _utils.getArticleURL)(CreateArticle.id);
  File "<anonymous>", line unknown, in Generator.next
  File "/app/build/handlers/askingArticleSubmissionReason.js", line 19, in step
    function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
  File "/app/build/handlers/askingArticleSubmissionReason.js", line 19, in <unknown>
    function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }
  File "internal/process/next_tick.js", line 68, in process._tickCallback