Fixing NopCommerce roxyFileman uploader

This version that is running on ALI cloud has file uploader issues, after investigation, I figured it is not retrieving the fileList correctly, an API is responding error, and the file I found is src/Presentation/Nop.Web/Areas/Admin/Controllers/RoxyFilemanController.cs, I need to fix this since if it continues to be like this, I cannot post images on the website in posts or news,

2022-9-4 上午9:46
This decesion is reverted, won't fix pictures for now.
2022-9-12 上午11:26
This is marked won't fix, since I still plan to use 3rd party pictures storage, so picture address is still http://somepicture, still able to display in blog posts.