[UIWebView Error]App Transport Security has blocked a cleartext

The detailed error stack show below:

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App 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.

The error message already told you that you can modify the Info.plist to disable this validation.

To open the Info.plist file and add below configuration:

+ App Transport Security Settings
   - Allow Arbitary Loads = YES