我仔细阅读了Sequelize升级手册，发现项目中没有重大更改，但是升级Sequelize之后，我仍然得到了这一点：
Sequelize CLI [Node: 12.4.0, CLI: 5.5.0, ORM: 6.0.0]
Loaded configuration file "config/sequelize.js".
Using environment "development".
Unhandled rejection TypeError: Cannot read property 'replace' of undefined
at Object.removeTicks (/Users/Gabe/esports-calendar-api/node_modules/sequelize/lib/utils.js:354:12)