nginx:400 Bad requestthe plain HTTP request

nginx:400 Bad Request | The plain HTTP request is sent to HTTPS port

Nginx version nginx/1.12.2
Problem 400 error using SSL link in Nginx environment
The Nginx configuration file is as follows:

Access to HTTPS is normal, but the following error occurs when accessing directly:
$ bad Request the plain HTTP request is sent to HTTPS port error

Refer to the official documentation solution as follows:
Remove SSL on; and in listen 443; 443 Plus SSL

HTTP Direct Access Demo normal:

To resolve this

nginx:400 Bad requestthe plain HTTP request