Right-click info.plis and click open as Source to copy this paragraph in the file (as a note, save it for viewing)
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
<key>NSExceptionDomains</key>
<dict>
<key>s3.cn-north-1.amazonaws.com.cn</key>
<dict>
<key>NSExceptionRequiresForwardSecrecy</key>
<false/>
</dict>
</dict>
</dict>