Update Caddyfile

fixes 404 errors for files in the public folder, such as css or js files.

caddy/Caddyfile

 # Docs: https://caddyserver.com/docs/caddyfile
 0.0.0.0:80
-fastcgi / php-fpm:9000 php
+root /var/www/laravel/public
+fastcgi / php-fpm:9000 php {
+    index index.php
+}
 rewrite {
+    r .*
+    ext /
     to /index.php?{query}
 }
 browse
 log stdout
-errors stdout
+errors stderr
 # Uncomment to enable TLS (HTTPS)
 # Change the first list to listen on port 443 when enabling TLS
 #tls self_signed