Update nextcloud.conf

fix file upload size limit

data/assets/nextcloud/nextcloud.conf

@@ -76,6 +76,7 @@ server {
     fastcgi_pass phpfpm:9000;
     fastcgi_intercept_errors on;
     fastcgi_request_buffering off;
+    client_max_body_size 10G;
   }
 
   location ~ ^/(?:updater|ocs-provider)(?:$|/) {