uwsgiでbind(): Permission denied [core/socket.c line 230]

さくらvps
ubutnu 16.04
nignx 1.15.8
uwsgi 2.0.17
Ubuntu + Nginx + MySQLでDjangoアプリをデプロイ（構築編）

こちらの記事を参考にデプロイ作業をしております。
ページの最後にたどり着いたのですが、ブラウザには502が表示されており困っています。

uwsgiがスタートできない状態です
uwsgiのログをみますとエラーが表示されています。

bind(): Permission denied [core/socket.c line 230]

権限を変更を試してみましたがうまく行きませんでした。

$ chmod 770 /var/run/uwsgi/master.pid

何か他に試すべきことはないでしょうか？
よろしくお願いいたします。

uwsgiのログ
/var/log/uwsgi/uwsgi.log

*** Starting uWSGI 2.0.18 (64bit) on [Sun Feb 17 17:54:41 2019] ***
compiled with version: 5.4.0 20160609 on 15 February 2019 09:16:38
os: Linux-4.4.0-112-generic #135-Ubuntu SMP Fri Jan 19 11:48:36 UTC 2018
nodename: tk2-233-26158
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /
writing pidfile to /var/run/uwsgi/master.pid
detected binary path: /usr/local/bin/uwsgi
setgid() to 117
setuid() to 117
chdir() to /home/ubuntu/googleranker
your processes number limit is 1809
your memory page size is 4096 bytes
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
thunder lock: enabled
bind(): Permission denied [core/socket.c line 230]

/var/log/nginx/error.log

2019/02/17 17:42:51 [info] 1243#1243: [ngx_pagespeed 1.13.35.2-0] No threading detected. Own threads: 1 Rewrite, 1 Expensive Rewrite.
2019/02/17 17:56:40 [crit] 1250#1250: *1 connect() to unix:///var/run/uwsgi/master.sock failed (2: No such file or directory) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: [xxx.xxx.xxx.xxx], request: "GET / HTTP/1.1", upstream: "uwsgi://unix:///var/run/uwsgi/master.sock:", host: "xxx.xxx.xxx.xxx."
2019/02/17 17:56:40 [crit] 1250#1250: *1 connect() to unix:///var/run/uwsgi/master.sock failed (2: No such file or directory) while connecting to upstream, client: xxx.xxx.xxx.xxx., server: [xxx.xxx.xxx.xxx.], request: "GET /favicon.ico HTTP/1.1", upstream: "uwsgi://unix:///var/run/uwsgi/master.sock:", host: "xxx.xxx.xxx.xxx", referrer: "http://xxx.xxx.xxx.xxx/"