Url is not working inside iframe on app

Hi Everyone,

I use iframe in my app and there are several url’s in iframe. But these url’s are not working in iframe on app.
What can I do about this problem?

Thanks.

what do you see in the console? wild guess, you haven’t installed of configured the whitelist plugin.

I don’t see anything. reason of this, url not working inside iframe.
I dont install any whitelist plugin. How to install this plugin?