nginx cannot parse the index.php file in laravel/public

I changed the root path in /etc/nginx/sites-available/default to /var/www/html/laravel/public, but the running result was 403. At first, I thought it was because the folder permissions were insufficient. According to the online Even though both storage and vendor have permissions to read and write, it still doesn't work. Can anyone help me check it out?
Here is my nginx configuration file:

<code>server {
    listen 80 default_server;
    listen [::]:80 default_server;

    # SSL configuration
    #
    # listen 443 ssl default_server;
    # listen [::]:443 ssl default_server;
    #
    # Note: You should disable gzip for SSL traffic.
    # See: https://bugs.debian.org/773332
    #
    # Read up on ssl_ciphers to ensure a secure configuration.
    # See: https://bugs.debian.org/765782
    #
    # Self signed certs generated by the ssl-cert package
    # Don't use them in a production server!
    #
    # include snippets/snakeoil.conf;

    root /var/www/html/laravel/public;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    server_name _;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
    
    #   With php7.0-cgi alone:
    #    fastcgi_pass 127.0.0.1:9000;
    #   With php7.0-fpm:
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
        deny all;
    }
}


# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
#server {
#    listen 80;
#    listen [::]:80;
#
#    server_name example.com;
#
#    root /var/www/html/laravel/public;
#    index index.html;
#
#    location / {
#        try_files $uri $uri/ =404;
#    }
#}</code>

Reply content:

I changed the root path in /etc/nginx/sites-available/default to /var/www/html/laravel/public, but the running result was 403. At first, I thought it was because the folder permissions were insufficient. According to the online Even though both storage and vendor have permissions to read and write, it still doesn't work. Can anyone help me check it out?
Here is my nginx configuration file:

<code>server {
    listen 80 default_server;
    listen [::]:80 default_server;

    # SSL configuration
    #
    # listen 443 ssl default_server;
    # listen [::]:443 ssl default_server;
    #
    # Note: You should disable gzip for SSL traffic.
    # See: https://bugs.debian.org/773332
    #
    # Read up on ssl_ciphers to ensure a secure configuration.
    # See: https://bugs.debian.org/765782
    #
    # Self signed certs generated by the ssl-cert package
    # Don't use them in a production server!
    #
    # include snippets/snakeoil.conf;

    root /var/www/html/laravel/public;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    server_name _;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
    
    #   With php7.0-cgi alone:
    #    fastcgi_pass 127.0.0.1:9000;
    #   With php7.0-fpm:
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
        deny all;
    }
}


# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
#server {
#    listen 80;
#    listen [::]:80;
#
#    server_name example.com;
#
#    root /var/www/html/laravel/public;
#    index index.html;
#
#    location / {
#        try_files $uri $uri/ =404;
#    }
#}</code>

Add an index.php after the index in the line below root

The problem is found, the configuration file is still written wrong

<code>root /var/www/html/laravel/public;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html ;  ------>这里面要加上index.php

    server_name _;------------>这里要把域名写成127.0.0.1或者local    但是后来我测试里下用下划线 貌似也是可以正常显示的</code>