How to solve IP_ADD_MEMBERSHIP failed: No buffer space available error?

Question

ubuntu

The error appears after restarting Nginx.

site.conf

server {
server_name local.mysite.dev;
listen 80;
listen 443 ssl http2 default_server;
# listen [::]:443 ssl http2 default_server;
server_name 127.0.0.1:50010;
include snippets/self-signed.conf;
include snippets/ssl-params.conf;
location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass 127.0.0.1:50010 ;
}

}