我正在使用Ubuntu 16.04，PHP7，Laravel和nginx。这是我收到的error.log：
2019/01/05 07:11:41 [error] 25778#25778: *77 FastCGI sent in stderr:
"PHP message: PHP Warning:
require(/var/www/phish/public/../vendor/autoload.php): failed to
open stream: Permission denied in /var/www/phish/public/index.php on
line 24
PHP message: PHP Fatal error: require(): Failed opening required
'/var/www/phish/public/../vendor/autoload.php'
(include_path='.:/usr/share/php') in /var/www/phish/public/index.php
on line 24" while reading response header from upstream, client:
109.201.143.58, server: localhost, request: "GET / HTTP/1.1",
upstream: "fastcgi://unix:/run/php/php7.2-fpm.sock:",