WeChat applet upload file problem

1. When using Alibaba Cloud OSS at that time, if you use a custom domain name, you cannot use https by default. You can only achieve https access through CDN acceleration and an https certificate or through nginx reverse proxy. If you use the default domain name of Alibaba Cloud, sometimes Tencent will misreport it as a dangerous URL, which makes it impossible to upload. In this case, you can send the URL to any WeChat chat window and click to visit, and you can find the appeal method on the page.