您好，我在使用pytumblr使用从reddit的api抓取中获得的url创建照片帖子方面遇到了一些问题。我能够从reddit获取url，但是当我尝试使用pytumblr api时，即使我的所有凭据都已被授权，我也无法创建帖子。我正在使用python 3.6。
Unhandled rejection TypeError: Cannot read property 'create' of undefined
at db.sequelize.sync.then (/Users/antoniotoche/Desktop/nodeterax/routes/users_logic.js:45:18)
at tryCatcher (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/promise.js:512:31)
at Promise._settlePromise (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/promise.js:569:18)
at Promise._settlePromise0 (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/promise.js:614:10)
at Promise._settlePromises (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/promise.js:694:18)
at _drainQueueStep (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/async.js:138:12)
at _drainQueue (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/async.js:131:9)
at Async._drainQueues (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/async.js:147:5)
at Immediate.Async.drainQueues [as _onImmediate] (/Users/antoniotoche/Desktop/nodeterax/node_modules/bluebird/js/release/async.js:17:14)
at runCallback (timers.js:694:18)
at tryOnImmediate (timers.js:665:5)
at processImmediate (timers.js:647:5)代码将运行并将所有打印语句打印到控制台，但是当我检查我为此使用的tumblr帐户时，帖子不会出现。