请教个 Nginx 的 rewrite 问题

不管怎么改都无法访问，所以附上完整的配置文件信息，由于 V 站附言限制，所以分成两个附言来显示配置文件：

upstream php-handler {
server unix:/var/run/php/php7.2-fpm.sock;
}

server {
listen 80;
listen [::]:80;
server_name cloud.example.com;
}

server {
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header X-Robots-Tag none;
add_header X-Download-Options noopen;
add_header X-Permitted-Cross-Domain-Policies none;
add_header Referrer-Policy no-referrer;

# Remove X-Powered-By, which is an information leak
fastcgi_hide_header X-Powered-By;

# Path to the root of your installation
root /var/www/html/nextcloud/;
location /pma {
alias /var/www/html/pma;
}

location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}

# rewrite ^/.well-known/webfinger /public.php?service=webfinger last;

location = /.well-known/carddav {
return 301 $scheme://$host/remote.php/dav;
}
location = /.well-known/caldav {
return 301 $scheme://$host/remote.php/dav;
}

# set max upload size
client_max_body_size 512M;
fastcgi_buffers 64 4K;

# Enable gzip but do not remove ETag headers
gzip on;
gzip_vary on;
gzip_comp_level 4;
gzip_min_length 256;
gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;

#pagespeed off;

location / {
rewrite ^ /index.php$request_uri;
}

location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)/ {
deny all;
}
location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
deny all;
}

location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+)\.php(?:$|/) {
fastcgi_split_path_info ^(.+?\.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
#fastcgi_param HTTPS on;
#Avoid sending the security headers twice
fastcgi_param modHeadersAvailable true;
fastcgi_param front_controller_active true;
fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
fastcgi_intercept_errors on;
fastcgi_request_buffering off;
}

location ~ ^/(?:updater|ocs-provider)(?:$|/) {
try_files $uri/ =404;
index index.php;
}

# Make sure it is BELOW the PHP block
location ~ \.(?:css|js|woff2?|svg|gif)$ {
try_files $uri /index.php$request_uri;
add_header Cache-Control "public, max-age=15778463";
# could take several months.
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header X-Robots-Tag none;
add_header X-Download-Options noopen;
add_header X-Permitted-Cross-Domain-Policies none;
add_header Referrer-Policy no-referrer;

# Optional: Don't log access to assets
access_log off;
}

location ~ \.(?:css|js|woff|svg|gif|png|html|ttf|ico|jpg|jpeg)$ {
try_files $uri /index.php$request_uri;
# Optional: Don't log access to other assets
access_log off;
}
}