Run supervisor --harmony index and the following error will be reported
Then I shut down and restarted and ran node --harmony index and reported the error as shown below
....Unable to connect to mongo. . . Wasn't it written? .
Unable to connect to the database
mongodb is not enabled or port 27017 is enabled
The reason is that the mongodb service is not started
1. If mongodb is already installed
mongod #启动命令
2. If mongodb installation is abnormal
View here
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
....Unable to connect to mongo. . . Wasn't it written? .
Unable to connect to the database
mongodb is not enabled or port 27017 is enabled
1. If mongodb is already installed
2. If mongodb installation is abnormal
View here