Transport security has blocked a cleartext HTTP

What setting do I need to put in my info.plist to enable HTTP mode as per the following error message?

Transport security has blocked a cleartext HTTP (http://) resource
load since it is insecure. Temporary exceptions can be configured via
your app’s Info.plist file.

Assume that my domain is example.com.

Use NSAppTransportSecurity:

You have to set the NSAllowsArbitraryLoads key to YES under NSAppTransportSecurity dictionary in your info.plist file.